322 lines
12 KiB
LLVM
322 lines
12 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=instcombine < %s | FileCheck %s
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declare double @llvm.pow.f64(double, double)
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declare void @use(double)
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; negative test for:
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; pow(a,b) * a --> pow(a, b+1) (requires reassoc)
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define double @pow_ab_a(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_a(
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; CHECK-NEXT: [[P:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[M:%.*]] = fmul double [[P]], [[A]]
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; CHECK-NEXT: ret double [[M]]
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;
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul double %p, %a
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ret double %m
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}
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; pow(a,b) * a --> pow(a, b+1)
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define double @pow_ab_a_reassoc(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_a_reassoc(
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[B:%.*]], 1.000000e+00
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; CHECK-NEXT: [[M:%.*]] = call reassoc double @llvm.pow.f64(double [[A:%.*]], double [[TMP1]])
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; CHECK-NEXT: ret double [[M]]
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;
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul reassoc double %p, %a
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ret double %m
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}
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; a * pow(a,b) --> pow(a, b+1)
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define double @pow_ab_a_reassoc_commute(double %pa, double %b) {
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; CHECK-LABEL: @pow_ab_a_reassoc_commute(
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; CHECK-NEXT: [[A:%.*]] = fadd double [[PA:%.*]], 4.200000e+01
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[B:%.*]], 1.000000e+00
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; CHECK-NEXT: [[M:%.*]] = call reassoc double @llvm.pow.f64(double [[A]], double [[TMP1]])
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; CHECK-NEXT: ret double [[M]]
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;
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%a = fadd double %pa, 42.0 ; thwart complexity-based canonicalization
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul reassoc double %a, %p
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ret double %m
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}
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; negative test - extra uses not allowed
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define double @pow_ab_a_reassoc_use(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_a_reassoc_use(
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; CHECK-NEXT: [[P:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[M:%.*]] = fmul reassoc double [[P]], [[A]]
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; CHECK-NEXT: call void @use(double [[P]])
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; CHECK-NEXT: ret double [[M]]
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;
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul reassoc double %p, %a
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call void @use(double %p)
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ret double %m
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}
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; negative test for:
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; pow(a,b) * 1.0/a --> pow(a, b-1) (requires reassoc)
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define double @pow_ab_recip_a(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_recip_a(
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; CHECK-NEXT: [[R:%.*]] = fdiv double 1.000000e+00, [[A:%.*]]
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; CHECK-NEXT: [[P:%.*]] = call double @llvm.pow.f64(double [[A]], double [[B:%.*]])
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; CHECK-NEXT: [[M:%.*]] = fmul double [[R]], [[P]]
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; CHECK-NEXT: ret double [[M]]
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;
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%r = fdiv double 1.0, %a
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul double %r, %p
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ret double %m
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}
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; pow(a,b) / a --> pow(a, b-1) (requires reassoc)
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define double @pow_ab_recip_a_reassoc(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_recip_a_reassoc(
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[B:%.*]], -1.000000e+00
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; CHECK-NEXT: [[M:%.*]] = call reassoc double @llvm.pow.f64(double [[A:%.*]], double [[TMP1]])
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; CHECK-NEXT: ret double [[M]]
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;
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%r = fdiv double 1.0, %a
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul reassoc double %r, %p
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ret double %m
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}
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; pow(a,b) / a --> pow(a, b-1) (requires reassoc)
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define double @pow_ab_recip_a_reassoc_commute(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_recip_a_reassoc_commute(
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[B:%.*]], -1.000000e+00
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; CHECK-NEXT: [[M:%.*]] = call reassoc double @llvm.pow.f64(double [[A:%.*]], double [[TMP1]])
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; CHECK-NEXT: ret double [[M]]
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;
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%r = fdiv double 1.0, %a
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul reassoc double %p, %r
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ret double %m
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}
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; TODO: extra use prevents conversion to fmul, so this needs a different pattern match.
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define double @pow_ab_recip_a_reassoc_use1(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_recip_a_reassoc_use1(
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; CHECK-NEXT: [[R:%.*]] = fdiv double 1.000000e+00, [[A:%.*]]
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; CHECK-NEXT: [[P:%.*]] = call double @llvm.pow.f64(double [[A]], double [[B:%.*]])
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; CHECK-NEXT: [[M:%.*]] = fmul reassoc double [[R]], [[P]]
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; CHECK-NEXT: call void @use(double [[R]])
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; CHECK-NEXT: ret double [[M]]
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;
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%r = fdiv double 1.0, %a
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul reassoc double %r, %p
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call void @use(double %r)
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ret double %m
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}
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; negative test - extra pow uses not allowed
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define double @pow_ab_recip_a_reassoc_use2(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_recip_a_reassoc_use2(
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; CHECK-NEXT: [[P:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[M:%.*]] = fdiv reassoc double [[P]], [[A]]
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; CHECK-NEXT: call void @use(double [[P]])
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; CHECK-NEXT: ret double [[M]]
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;
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%r = fdiv double 1.0, %a
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul reassoc double %r, %p
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call void @use(double %p)
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ret double %m
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}
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; negative test - extra pow uses not allowed
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define double @pow_ab_recip_a_reassoc_use3(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_recip_a_reassoc_use3(
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; CHECK-NEXT: [[R:%.*]] = fdiv double 1.000000e+00, [[A:%.*]]
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; CHECK-NEXT: [[P:%.*]] = call double @llvm.pow.f64(double [[A]], double [[B:%.*]])
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; CHECK-NEXT: [[M:%.*]] = fmul reassoc double [[R]], [[P]]
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; CHECK-NEXT: call void @use(double [[R]])
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; CHECK-NEXT: call void @use(double [[P]])
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; CHECK-NEXT: ret double [[M]]
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;
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%r = fdiv double 1.0, %a
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%p = call double @llvm.pow.f64(double %a, double %b)
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%m = fmul reassoc double %r, %p
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call void @use(double %r)
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call void @use(double %p)
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ret double %m
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}
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; negative test for:
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; (a**b) * (c**b) --> (a*c) ** b (if mul is reassoc)
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define double @pow_ab_pow_cb(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_pow_cb(
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; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[TMP2:%.*]] = call double @llvm.pow.f64(double [[C:%.*]], double [[B]])
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; CHECK-NEXT: [[MUL:%.*]] = fmul double [[TMP2]], [[TMP1]]
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; CHECK-NEXT: ret double [[MUL]]
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;
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%1 = call double @llvm.pow.f64(double %a, double %b)
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%2 = call double @llvm.pow.f64(double %c, double %b)
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%mul = fmul double %2, %1
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ret double %mul
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}
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; (a**b) * (c**b) --> (a*c) ** b
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define double @pow_ab_pow_cb_reassoc(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_pow_cb_reassoc(
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; CHECK-NEXT: [[TMP1:%.*]] = fmul reassoc double [[C:%.*]], [[A:%.*]]
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; CHECK-NEXT: [[MUL:%.*]] = call reassoc double @llvm.pow.f64(double [[TMP1]], double [[B:%.*]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%1 = call double @llvm.pow.f64(double %a, double %b)
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%2 = call double @llvm.pow.f64(double %c, double %b)
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%mul = fmul reassoc double %2, %1
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ret double %mul
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}
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; (a**b) * (c**b) --> (a*c) ** b
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define double @pow_ab_pow_cb_reassoc_use1(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_pow_cb_reassoc_use1(
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; CHECK-NEXT: [[AB:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[TMP1:%.*]] = fmul reassoc double [[A]], [[C:%.*]]
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; CHECK-NEXT: [[MUL:%.*]] = call reassoc double @llvm.pow.f64(double [[TMP1]], double [[B]])
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; CHECK-NEXT: call void @use(double [[AB]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%ab = call double @llvm.pow.f64(double %a, double %b)
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%cb = call double @llvm.pow.f64(double %c, double %b)
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%mul = fmul reassoc double %ab, %cb
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call void @use(double %ab)
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ret double %mul
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}
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; (a**b) * (c**b) --> (a*c) ** b
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define double @pow_ab_pow_cb_reassoc_use2(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_pow_cb_reassoc_use2(
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; CHECK-NEXT: [[CB:%.*]] = call double @llvm.pow.f64(double [[C:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[TMP1:%.*]] = fmul reassoc double [[A:%.*]], [[C]]
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; CHECK-NEXT: [[MUL:%.*]] = call reassoc double @llvm.pow.f64(double [[TMP1]], double [[B]])
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; CHECK-NEXT: call void @use(double [[CB]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%ab = call double @llvm.pow.f64(double %a, double %b)
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%cb = call double @llvm.pow.f64(double %c, double %b)
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%mul = fmul reassoc double %ab, %cb
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call void @use(double %cb)
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ret double %mul
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}
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; negative test - too many extra uses
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define double @pow_ab_pow_cb_reassoc_use3(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_pow_cb_reassoc_use3(
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; CHECK-NEXT: [[AB:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[CB:%.*]] = call double @llvm.pow.f64(double [[C:%.*]], double [[B]])
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; CHECK-NEXT: [[MUL:%.*]] = fmul reassoc double [[AB]], [[CB]]
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; CHECK-NEXT: call void @use(double [[AB]])
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; CHECK-NEXT: call void @use(double [[CB]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%ab = call double @llvm.pow.f64(double %a, double %b)
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%cb = call double @llvm.pow.f64(double %c, double %b)
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%mul = fmul reassoc double %ab, %cb
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call void @use(double %ab)
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call void @use(double %cb)
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ret double %mul
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}
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define double @pow_ab_pow_ac(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_pow_ac(
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; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[TMP2:%.*]] = call double @llvm.pow.f64(double [[A]], double [[C:%.*]])
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; CHECK-NEXT: [[MUL:%.*]] = fmul double [[TMP2]], [[TMP1]]
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; CHECK-NEXT: ret double [[MUL]]
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;
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%1 = call double @llvm.pow.f64(double %a, double %b)
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%2 = call double @llvm.pow.f64(double %a, double %c)
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%mul = fmul double %2, %1
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ret double %mul
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}
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define double @pow_ab_x_pow_ac_reassoc(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_x_pow_ac_reassoc(
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[C:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[MUL:%.*]] = call reassoc double @llvm.pow.f64(double [[A:%.*]], double [[TMP1]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%1 = call double @llvm.pow.f64(double %a, double %b)
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%2 = call double @llvm.pow.f64(double %a, double %c)
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%mul = fmul reassoc double %2, %1
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ret double %mul
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}
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define double @pow_ab_reassoc(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_reassoc(
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[B:%.*]], [[B]]
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; CHECK-NEXT: [[MUL:%.*]] = call reassoc double @llvm.pow.f64(double [[A:%.*]], double [[TMP1]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%1 = call double @llvm.pow.f64(double %a, double %b)
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%mul = fmul reassoc double %1, %1
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ret double %mul
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}
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define double @pow_ab_reassoc_extra_use(double %a, double %b) {
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; CHECK-LABEL: @pow_ab_reassoc_extra_use(
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; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[MUL:%.*]] = fmul reassoc double [[TMP1]], [[TMP1]]
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; CHECK-NEXT: call void @use(double [[TMP1]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%1 = call double @llvm.pow.f64(double %a, double %b)
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%mul = fmul reassoc double %1, %1
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call void @use(double %1)
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ret double %mul
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}
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define double @pow_ab_x_pow_ac_reassoc_extra_use(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_x_pow_ac_reassoc_extra_use(
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; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[TMP2:%.*]] = fadd reassoc double [[B]], [[C:%.*]]
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; CHECK-NEXT: [[MUL:%.*]] = call reassoc double @llvm.pow.f64(double [[A]], double [[TMP2]])
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; CHECK-NEXT: call void @use(double [[TMP1]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%1 = call double @llvm.pow.f64(double %a, double %b)
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%2 = call double @llvm.pow.f64(double %a, double %c)
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%mul = fmul reassoc double %1, %2
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call void @use(double %1)
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ret double %mul
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}
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define double @pow_ab_x_pow_ac_reassoc_multiple_uses(double %a, double %b, double %c) {
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; CHECK-LABEL: @pow_ab_x_pow_ac_reassoc_multiple_uses(
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; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
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; CHECK-NEXT: [[TMP2:%.*]] = call double @llvm.pow.f64(double [[A]], double [[C:%.*]])
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; CHECK-NEXT: [[MUL:%.*]] = fmul reassoc double [[TMP1]], [[TMP2]]
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; CHECK-NEXT: call void @use(double [[TMP1]])
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; CHECK-NEXT: call void @use(double [[TMP2]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%1 = call double @llvm.pow.f64(double %a, double %b)
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%2 = call double @llvm.pow.f64(double %a, double %c)
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%mul = fmul reassoc double %1, %2
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call void @use(double %1)
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call void @use(double %2)
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ret double %mul
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}
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