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https://github.com/c64scene-ar/llvm-6502.git
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d7b2788e51
When materializing constant i1 values, they must be zero extended. We represent i1 values as [0, 1], not [0, -1], in i32 registers. As it turns out, this code path was dead for i1 values prior to r216006 (which is why this did not manifest in miscompiles until recently). Fixes -O0 self-hosting on PPC64/Linux. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224842 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
515 B
LLVM
28 lines
515 B
LLVM
; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -mattr=-vsx | FileCheck %s --check-prefix=ELF64
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define zeroext i1 @testi1(i8 %in) nounwind uwtable ssp {
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entry:
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%c = icmp eq i8 %in, 5
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br i1 %c, label %true, label %false
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; ELF64-LABEL: @testi1
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true:
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br label %end
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; ELF64-NOT: li {{[0-9]+}}, -1
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; ELF64: li {{[0-9]+}}, 1
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false:
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br label %end
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; ELF64: li {{[0-9]+}}, 0
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end:
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%r = phi i1 [ 0, %false], [ 1, %true ]
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ret i1 %r
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; ELF64: blr
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}
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