258 lines
6.8 KiB
LLVM
258 lines
6.8 KiB
LLVM
; RUN: opt --bpf-check-and-opt-ir -S -mtriple=bpf-pc-linux %s | FileCheck %s
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; Test plan:
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; @test1: x < umin(i64 a, i64 b)
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; @test2: x < umax(i64 a, i64 b)
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; @test3: x >= umin(i64 a, i64 b)
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; @test4: x >= umax(i64 a, i64 b)
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; @test5: umin(i64 a, i64 b) >= x
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; @test6: x < smin(i64 a, i64 b)
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; @test7: x < umin(i32 a, i32 b)
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; @test8: x < zext i64 umin(i32 a, i32 b)
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; @test9: x < sext i64 umin(i32 a, i32 b)
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; @test10: check that umin belonging to the same loop is not touched
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; @test11: check that nested loops are processed
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define i32 @test1(i64 %a, i64 %b, i64 %x) {
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entry:
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%min = tail call i64 @llvm.umin.i64(i64 %a, i64 %b)
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br label %loop
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loop:
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%cmp = icmp ult i64 %x, %min
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test1
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK-NEXT: %0 = icmp ult i64 %x, %a
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; CHECK-NEXT: %1 = icmp ult i64 %x, %b
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; CHECK-NEXT: %2 = select i1 %0, i1 %1, i1 false
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; CHECK-NEXT: br i1 %2, label %loop, label %ret
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define i32 @test2(i64 %a, i64 %b, i64 %x) {
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entry:
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%max = tail call i64 @llvm.umax.i64(i64 %a, i64 %b)
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br label %loop
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loop:
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%cmp = icmp ult i64 %x, %max
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test2
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK-NEXT: %0 = icmp ult i64 %x, %a
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; CHECK-NEXT: %1 = icmp ult i64 %x, %b
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; CHECK-NEXT: %2 = select i1 %0, i1 true, i1 %1
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; CHECK-NEXT: br i1 %2, label %loop, label %ret
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define i32 @test3(i64 %a, i64 %b, i64 %x) {
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entry:
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%min = tail call i64 @llvm.umin.i64(i64 %a, i64 %b)
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br label %loop
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loop:
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%cmp = icmp uge i64 %x, %min
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test3
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK-NEXT: %0 = icmp uge i64 %x, %a
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; CHECK-NEXT: %1 = icmp uge i64 %x, %b
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; CHECK-NEXT: %2 = select i1 %0, i1 true, i1 %1
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; CHECK-NEXT: br i1 %2, label %loop, label %ret
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define i32 @test4(i64 %a, i64 %b, i64 %x) {
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entry:
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%max = tail call i64 @llvm.umax.i64(i64 %a, i64 %b)
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br label %loop
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loop:
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%cmp = icmp uge i64 %x, %max
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test4
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK-NEXT: %0 = icmp uge i64 %x, %a
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; CHECK-NEXT: %1 = icmp uge i64 %x, %b
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; CHECK-NEXT: %2 = select i1 %0, i1 %1, i1 false
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; CHECK-NEXT: br i1 %2, label %loop, label %ret
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define i32 @test5(i64 %a, i64 %b, i64 %x) {
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entry:
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%min = tail call i64 @llvm.umin.i64(i64 %a, i64 %b)
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br label %loop
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loop:
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%cmp = icmp uge i64 %min, %x
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test5
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK: %0 = icmp ule i64 %x, %a
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; CHECK-NEXT: %1 = icmp ule i64 %x, %b
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; CHECK-NEXT: %2 = select i1 %0, i1 %1, i1 false
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; CHECK-NEXT: br i1 %2, label %loop, label %ret
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define i32 @test6(i64 %a, i64 %b, i64 %x) {
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entry:
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%min = tail call i64 @llvm.smin.i64(i64 %a, i64 %b)
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br label %loop
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loop:
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%cmp = icmp slt i64 %x, %min
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test6
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK: %0 = icmp slt i64 %x, %a
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; CHECK-NEXT: %1 = icmp slt i64 %x, %b
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; CHECK-NEXT: %2 = select i1 %0, i1 %1, i1 false
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; CHECK-NEXT: br i1 %2, label %loop, label %ret
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define i32 @test7(i32 %a, i32 %b, i32 %x) {
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entry:
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%min = tail call i32 @llvm.umin.i32(i32 %a, i32 %b)
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br label %loop
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loop:
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%cmp = icmp ult i32 %x, %min
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test7
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK: %0 = icmp ult i32 %x, %a
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; CHECK-NEXT: %1 = icmp ult i32 %x, %b
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; CHECK-NEXT: %2 = select i1 %0, i1 %1, i1 false
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; CHECK-NEXT: br i1 %2, label %loop, label %ret
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define i32 @test8(i32 %a, i32 %b, i64 %x) {
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entry:
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%min = tail call i32 @llvm.umin.i32(i32 %a, i32 %b)
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br label %loop
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loop:
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%ext = zext i32 %min to i64
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%cmp = icmp ult i64 %x, %ext
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test8
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK-NEXT: %0 = zext i32 %a to i64
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; CHECK-NEXT: %1 = zext i32 %b to i64
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; CHECK-NEXT: %2 = icmp ult i64 %x, %0
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; CHECK-NEXT: %3 = icmp ult i64 %x, %1
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; CHECK-NEXT: %4 = select i1 %2, i1 %3, i1 false
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; CHECK-NEXT: br i1 %4, label %loop, label %ret
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define i32 @test9(i32 %a, i32 %b, i64 %x) {
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entry:
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%min = tail call i32 @llvm.umin.i32(i32 %a, i32 %b)
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br label %loop
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loop:
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%ext = sext i32 %min to i64
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%cmp = icmp ult i64 %x, %ext
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test9
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK-NEXT: %0 = sext i32 %a to i64
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; CHECK-NEXT: %1 = sext i32 %b to i64
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; CHECK-NEXT: %2 = icmp ult i64 %x, %0
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; CHECK-NEXT: %3 = icmp ult i64 %x, %1
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; CHECK-NEXT: %4 = select i1 %2, i1 %3, i1 false
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; CHECK-NEXT: br i1 %4, label %loop, label %ret
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; umin within the loop body is unchanged
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define i32 @test10(i64 %a, i64 %b, i64 %x) {
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entry:
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br label %loop
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loop:
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%min = tail call i64 @llvm.umin.i64(i64 %a, i64 %b)
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%cmp = icmp ult i64 %x, %min
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br i1 %cmp, label %loop, label %ret
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ret: ret i32 0
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}
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; CHECK: @test10
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK-NEXT: %min = tail call i64 @llvm.umin.i64(i64 %a, i64 %b)
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; CHECK-NEXT: %cmp = icmp ult i64 %x, %min
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; CHECK-NEXT: br i1 %cmp, label %loop, label %ret
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; umin from outer loop body is processed
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define i32 @test11(i64 %a, i64 %b, i64 %x) {
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entry:
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br label %loop
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loop:
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%min = tail call i64 @llvm.umin.i64(i64 %a, i64 %b)
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br label %nested.loop
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nested.loop:
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%cmp = icmp ult i64 %x, %min
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br i1 %cmp, label %nested.loop, label %loop
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ret: ret i32 0
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}
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; CHECK: @test11
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK-EMPTY:
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; CHECK-NEXT: loop:
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; CHECK-NEXT: br label %nested.loop
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; CHECK-EMPTY:
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; CHECK-NEXT: nested.loop:
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; CHECK-NEXT: %0 = icmp ult i64 %x, %a
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; CHECK-NEXT: %1 = icmp ult i64 %x, %b
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; CHECK-NEXT: %2 = select i1 %0, i1 %1, i1 false
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; CHECK-NEXT: br i1 %2, label %nested.loop, label %loop
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declare i64 @llvm.umin.i64(i64, i64)
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declare i64 @llvm.smin.i64(i64, i64)
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declare i64 @llvm.umax.i64(i64, i64)
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declare i64 @llvm.smax.i64(i64, i64)
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declare i32 @llvm.umin.i32(i32, i32)
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declare i32 @llvm.smin.i32(i32, i32)
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declare i32 @llvm.umax.i32(i32, i32)
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declare i32 @llvm.smax.i32(i32, i32)
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