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b3f8b2cb2e
This patch is a partial revert of https://llvm.org/svn/llvm-project/llvm/trunk@237793. Extra "and" causes performance degradation. We assume that i1 is stored in zero-extended form. And store operation is responsible for zeroing upper bits. Differential Revision: http://reviews.llvm.org/D17541 llvm-svn: 261828
33 lines
790 B
LLVM
33 lines
790 B
LLVM
; RUN: llc -show-mc-encoding < %s | FileCheck %s
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; Test that the direct object emission selects the and variant with 8 bit
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; immediate.
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; We used to get this wrong when using direct object emission, but not when
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; reading assembly.
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target triple = "x86_64-pc-linux"
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define void @f1() {
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; CHECK-LABEL: f1:
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; CHECK: andq $-32, %rsp # encoding: [0x48,0x83,0xe4,0xe0]
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%foo = alloca i8, align 32
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ret void
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}
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define void @f2(i16 %x, i1 *%y) {
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; CHECK-LABEL: f2:
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; CHECK: andl $1, %edi # encoding: [0x83,0xe7,0x01]
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%c = trunc i16 %x to i1
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store i1 %c, i1* %y
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ret void
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}
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define void @f3(i32 %x, i1 *%y) {
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; CHECK-LABEL: f3:
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; CHECK: andl $1, %edi # encoding: [0x83,0xe7,0x01]
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%c = trunc i32 %x to i1
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store i1 %c, i1* %y
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ret void
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}
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