34 lines
1,018 B
LLVM
34 lines
1,018 B
LLVM
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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 ptr @earlyclobber-str-post(ptr %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 ptr %addr to i32
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store i32 %val, ptr %addr
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%new = getelementptr i32, ptr %addr, i32 1
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ret ptr %new
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}
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define ptr @earlyclobber-strh-post(ptr %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 ptr %addr to i32
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%tr = trunc i32 %val to i16
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store i16 %tr, ptr %addr
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%new = getelementptr i16, ptr %addr, i32 1
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ret ptr %new
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}
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define ptr @earlyclobber-strb-post(ptr %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 ptr %addr to i32
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%tr = trunc i32 %val to i8
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store i8 %tr, ptr %addr
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%new = getelementptr i8, ptr %addr, i32 1
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ret ptr %new
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}
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