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c804c11acc
It's possible to use the 'y' mmx constraint with a type narrower than 64-bits. This patch supports this by bitcasting the mmx type to 64-bits and then truncating to the desired type. There are probably other missing type combinations we need to support, but this is the case we have a bug report for. Fixes PR41748. Differential Revision: https://reviews.llvm.org/D61582 llvm-svn: 360069
16 lines
515 B
LLVM
16 lines
515 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-apple-macosx10.14.0 -mattr=mmx | FileCheck %s
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define i32 @foo(i32 %a) {
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; CHECK-LABEL: foo:
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; CHECK: ## %bb.0: ## %entry
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; CHECK-NEXT: ## InlineAsm Start
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; CHECK-NEXT: movd %edi, %mm0
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; CHECK-NEXT: ## InlineAsm End
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; CHECK-NEXT: movd %mm0, %eax
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; CHECK-NEXT: retq
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entry:
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%0 = tail call i32 asm sideeffect "movd $1, $0", "=y,r,~{dirflag},~{fpsr},~{flags}"(i32 %a)
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ret i32 %0
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}
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