570d47a010
Now we switch to the subregister in expandPostRAPseudos where we already switched the opcode. This simplifies a few isel patterns that used the pseudo directly. And magically seems to have improved our ability to CSE it in the undef-label.ll test. llvm-svn: 339496
34 lines
1.1 KiB
LLVM
34 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
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; This is a case where we would incorrectly conclude that LBB0_1 could only
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; be reached via fall through and would therefore omit the label.
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@g = global i32 0
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define void @xyz() {
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; CHECK-LABEL: xyz:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: movl $g, %eax
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; CHECK-NEXT: movq %rax, %xmm0
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; CHECK-NEXT: xorps %xmm1, %xmm1
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; CHECK-NEXT: ucomisd %xmm1, %xmm0
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; CHECK-NEXT: jne .LBB0_1
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; CHECK-NEXT: jnp .LBB0_2
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; CHECK-NEXT: .p2align 4, 0x90
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; CHECK-NEXT: .LBB0_1: # %foo
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ucomisd %xmm1, %xmm0
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; CHECK-NEXT: ja .LBB0_1
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; CHECK-NEXT: .LBB0_2: # %bar
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; CHECK-NEXT: retq
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entry:
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br i1 fcmp oeq (double bitcast (i64 ptrtoint (i32* @g to i64) to double), double 0.000000e+00), label %bar, label %foo
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foo:
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br i1 fcmp ogt (double bitcast (i64 ptrtoint (i32* @g to i64) to double), double 0.000000e+00), label %foo, label %bar
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bar:
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ret void
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}
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