e1be3403ff
Because we don't currently simplify icmp with undef in DAG, bugpoint loves to introduce them during reduction. This is a small step towards re-adding non-undef values into some of the simpler tests so that they should still test correctly and emit similar/same codegen. Prep work for PR40800 ([SelectionDAG] Add UNDEF handling to SelectionDAG::FoldSetCC). llvm-svn: 356076
30 lines
939 B
LLVM
30 lines
939 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux | FileCheck %s
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@c = external local_unnamed_addr global i32, align 4
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@b = external local_unnamed_addr global i32, align 4
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@d = external local_unnamed_addr global i32, align 4
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define void @fn1() {
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; CHECK-LABEL: fn1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: cmpl $1, {{.*}}(%rip)
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; CHECK-NEXT: sbbl %eax, %eax
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; CHECK-NEXT: andl $1, %eax
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; CHECK-NEXT: movl %eax, {{.*}}(%rip)
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; CHECK-NEXT: retq
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%t0 = load i32, i32* @c, align 4
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%tobool1 = icmp eq i32 %t0, 0
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%xor = zext i1 %tobool1 to i32
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%t1 = load i32, i32* @b, align 4
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%tobool2 = icmp ne i32 %t1, 0
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%t2 = load i32, i32* @d, align 4
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%tobool4 = icmp ne i32 %t2, 0
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%t3 = and i1 %tobool4, %tobool2
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%sub = sext i1 %t3 to i32
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%div = sdiv i32 %sub, 2
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%add = add nsw i32 %div, %xor
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store i32 %add, i32* @d, align 4
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ret void
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}
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