167 lines
5.3 KiB
LLVM
167 lines
5.3 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=m68k-linux -verify-machineinstrs | FileCheck %s
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define zeroext i8 @smul_i8(i8 signext %a, i8 signext %b) nounwind ssp {
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; CHECK-LABEL: smul_i8:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: move.b (11,%sp), %d0
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; CHECK-NEXT: and.l #255, %d0
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; CHECK-NEXT: move.b (7,%sp), %d1
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; CHECK-NEXT: and.l #255, %d1
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; CHECK-NEXT: muls %d0, %d1
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; CHECK-NEXT: move.l %d1, %d0
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; CHECK-NEXT: and.l #65535, %d0
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; CHECK-NEXT: and.l #255, %d0
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; CHECK-NEXT: rts
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entry:
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%smul = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 %b)
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%cmp = extractvalue { i8, i1 } %smul, 1
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%smul.result = extractvalue { i8, i1 } %smul, 0
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%X = select i1 %cmp, i8 42, i8 %smul.result
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ret i8 %X
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}
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define zeroext i8 @smul_i8_no_ovf(i8 signext %a, i8 signext %b) nounwind ssp {
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; CHECK-LABEL: smul_i8_no_ovf:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: move.l #42, %d0
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; CHECK-NEXT: rts
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entry:
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%smul = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 %b)
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%cmp = extractvalue { i8, i1 } %smul, 1
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%smul.result = extractvalue { i8, i1 } %smul, 0
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%X = select i1 %cmp, i8 %smul.result, i8 42
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ret i8 %X
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}
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declare { i8, i1 } @llvm.smul.with.overflow.i8(i8, i8) nounwind readnone
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define zeroext i16 @smul_i16(i16 signext %a, i16 signext %b) nounwind ssp {
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; CHECK-LABEL: smul_i16:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: move.w (6,%sp), %d0
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; CHECK-NEXT: move.w (10,%sp), %d1
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; CHECK-NEXT: muls %d1, %d0
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; CHECK-NEXT: and.l #65535, %d0
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; CHECK-NEXT: rts
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entry:
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%smul = tail call { i16, i1 } @llvm.smul.with.overflow.i16(i16 %a, i16 %b)
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%cmp = extractvalue { i16, i1 } %smul, 1
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%smul.result = extractvalue { i16, i1 } %smul, 0
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%X = select i1 %cmp, i16 42, i16 %smul.result
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ret i16 %X
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}
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declare { i16, i1 } @llvm.smul.with.overflow.i16(i16, i16) nounwind readnone
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declare i32 @printf(i8*, ...) nounwind
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declare {i32, i1} @llvm.smul.with.overflow.i32(i32, i32)
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@ok = internal constant [4 x i8] c"%d\0A\00"
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@no = internal constant [4 x i8] c"no\0A\00"
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define fastcc i1 @test1(i32 %v1, i32 %v2) nounwind {
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; CHECK-LABEL: test1:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: suba.l #12, %sp
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; CHECK-NEXT: muls.l %d1, %d0
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; CHECK-NEXT: bvc .LBB3_1
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; CHECK-NEXT: ; %bb.2: ; %overflow
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; CHECK-NEXT: lea (no,%pc), %a0
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; CHECK-NEXT: move.l %a0, (%sp)
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; CHECK-NEXT: jsr printf@PLT
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; CHECK-NEXT: move.b #0, %d0
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; CHECK-NEXT: adda.l #12, %sp
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; CHECK-NEXT: rts
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; CHECK-NEXT: .LBB3_1: ; %normal
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; CHECK-NEXT: move.l %d0, (4,%sp)
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; CHECK-NEXT: lea (ok,%pc), %a0
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; CHECK-NEXT: move.l %a0, (%sp)
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; CHECK-NEXT: jsr printf@PLT
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; CHECK-NEXT: move.b #1, %d0
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; CHECK-NEXT: adda.l #12, %sp
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; CHECK-NEXT: rts
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entry:
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%t = call {i32, i1} @llvm.smul.with.overflow.i32(i32 %v1, i32 %v2)
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%sum = extractvalue {i32, i1} %t, 0
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%obit = extractvalue {i32, i1} %t, 1
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br i1 %obit, label %overflow, label %normal
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normal:
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%t1 = tail call i32 (i8*, ...) @printf( i8* getelementptr ([4 x i8], [4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind
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ret i1 true
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overflow:
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%t2 = tail call i32 (i8*, ...) @printf( i8* getelementptr ([4 x i8], [4 x i8]* @no, i32 0, i32 0) ) nounwind
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ret i1 false
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}
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define fastcc i1 @test2(i32 %v1, i32 %v2) nounwind {
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; CHECK-LABEL: test2:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: suba.l #12, %sp
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; CHECK-NEXT: muls.l %d1, %d0
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; CHECK-NEXT: svs %d1
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; CHECK-NEXT: sub.b #1, %d1
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; CHECK-NEXT: bne .LBB4_2
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; CHECK-NEXT: ; %bb.1: ; %overflow
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; CHECK-NEXT: lea (no,%pc), %a0
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; CHECK-NEXT: move.l %a0, (%sp)
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; CHECK-NEXT: jsr printf@PLT
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; CHECK-NEXT: move.b #0, %d0
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; CHECK-NEXT: adda.l #12, %sp
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; CHECK-NEXT: rts
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; CHECK-NEXT: .LBB4_2: ; %normal
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; CHECK-NEXT: move.l %d0, (4,%sp)
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; CHECK-NEXT: lea (ok,%pc), %a0
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; CHECK-NEXT: move.l %a0, (%sp)
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; CHECK-NEXT: jsr printf@PLT
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; CHECK-NEXT: move.b #1, %d0
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; CHECK-NEXT: adda.l #12, %sp
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; CHECK-NEXT: rts
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entry:
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%t = call {i32, i1} @llvm.smul.with.overflow.i32(i32 %v1, i32 %v2)
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%sum = extractvalue {i32, i1} %t, 0
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%obit = extractvalue {i32, i1} %t, 1
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br i1 %obit, label %overflow, label %normal
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overflow:
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%t2 = tail call i32 (i8*, ...) @printf( i8* getelementptr ([4 x i8], [4 x i8]* @no, i32 0, i32 0) ) nounwind
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ret i1 false
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normal:
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%t1 = tail call i32 (i8*, ...) @printf( i8* getelementptr ([4 x i8], [4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind
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ret i1 true
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}
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define i32 @test3(i32 %a, i32 %b) nounwind readnone {
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; CHECK-LABEL: test3:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: move.l (8,%sp), %d0
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; CHECK-NEXT: add.l (4,%sp), %d0
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; CHECK-NEXT: add.l %d0, %d0
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; CHECK-NEXT: rts
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entry:
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%tmp0 = add i32 %b, %a
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%tmp1 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %tmp0, i32 2)
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%tmp2 = extractvalue { i32, i1 } %tmp1, 0
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ret i32 %tmp2
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}
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; Same as umul-with-overflow, we shouldn't fallback to
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; builtin here
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define i32 @test4(i32 %a, i32 %b) nounwind readnone {
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; CHECK-LABEL: test4:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: move.l (8,%sp), %d0
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; CHECK-NEXT: add.l (4,%sp), %d0
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; CHECK-NEXT: move.l #4, %d1
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; CHECK-NEXT: muls.l %d1, %d0
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; CHECK-NEXT: rts
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entry:
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%tmp0 = add i32 %b, %a
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%tmp1 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %tmp0, i32 4)
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%tmp2 = extractvalue { i32, i1 } %tmp1, 0
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ret i32 %tmp2
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}
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