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34 lines
1.0 KiB
34 lines
1.0 KiB
4 months ago
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; RUN: llc -mtriple=armv7-linux-gnueabihf %s -o - | FileCheck %s
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; Check that we don't create an unpredictable STR instruction,
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; e.g. str r0, [r0], #4
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define i32* @earlyclobber-str-post(i32* %addr) nounwind {
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; CHECK-LABEL: earlyclobber-str-post
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; CHECK-NOT: str r[[REG:[0-9]+]], [r[[REG]]], #4
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%val = ptrtoint i32* %addr to i32
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store i32 %val, i32* %addr
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%new = getelementptr i32, i32* %addr, i32 1
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ret i32* %new
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}
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define i16* @earlyclobber-strh-post(i16* %addr) nounwind {
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; CHECK-LABEL: earlyclobber-strh-post
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; CHECK-NOT: strh r[[REG:[0-9]+]], [r[[REG]]], #2
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%val = ptrtoint i16* %addr to i32
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%tr = trunc i32 %val to i16
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store i16 %tr, i16* %addr
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%new = getelementptr i16, i16* %addr, i32 1
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ret i16* %new
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}
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define i8* @earlyclobber-strb-post(i8* %addr) nounwind {
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; CHECK-LABEL: earlyclobber-strb-post
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; CHECK-NOT: strb r[[REG:[0-9]+]], [r[[REG]]], #1
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%val = ptrtoint i8* %addr to i32
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%tr = trunc i32 %val to i8
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store i8 %tr, i8* %addr
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%new = getelementptr i8, i8* %addr, i32 1
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ret i8* %new
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}
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