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f86c29ea2c
This makes it more likely that we can use the 16-bit push and pop instructions on Thumb-2, saving around 4 bytes per function. Differential Revision: http://reviews.llvm.org/D9165 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235637 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
828 B
LLVM
33 lines
828 B
LLVM
; RUN: llc < %s -mtriple=thumbv7-none-linux-gnueabi -arm-atomic-cfg-tidy=0 | FileCheck %s
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; PR4659
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; PR4682
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define hidden i32 @__gcov_execlp(i8* %path, i8* %arg, ...) nounwind {
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entry:
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; CHECK-LABEL: __gcov_execlp:
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; CHECK: sub sp, #8
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; CHECK: push
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; CHECK: add r7, sp, #8
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; CHECK: sub.w r4, r7, #8
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; CHECK: mov sp, r4
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; CHECK-NOT: mov sp, r7
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; CHECK: add sp, #8
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call void @__gcov_flush() nounwind
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call void @llvm.va_start(i8* null)
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br i1 undef, label %bb5, label %bb
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bb: ; preds = %bb, %entry
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br i1 undef, label %bb5, label %bb
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bb5: ; preds = %bb, %entry
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%0 = alloca i8*, i32 undef, align 4 ; <i8**> [#uses=1]
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%1 = call i32 @execvp(i8* %path, i8** %0) nounwind ; <i32> [#uses=1]
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ret i32 %1
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}
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declare hidden void @__gcov_flush()
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declare i32 @execvp(i8*, i8**) nounwind
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declare void @llvm.va_start(i8*) nounwind
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