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b56f278e08
The patch makes the unwind information not mention registers, which were pushed solely for the purpose of saving stack adjustment instructions. Differential revision: https://reviews.llvm.org/D41300 Fixes https://bugs.llvm.org/show_bug.cgi?id=35379 llvm-svn: 321996
53 lines
1.4 KiB
LLVM
53 lines
1.4 KiB
LLVM
; RUN: llc -mtriple=armv7a-eabi < %s | FileCheck %s --check-prefix=CHECK-ARM
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; RUN: llc -mtriple=armv6m-eabi < %s | FileCheck %s --check-prefix=CHECK-THM
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; Function Attrs: minsize optsize
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declare void @g(i32*) local_unnamed_addr #0
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; Function Attrs: minsize optsize
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define void @f() local_unnamed_addr #0 {
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entry:
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%i = alloca i32, align 4
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%0 = bitcast i32* %i to i8*
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store i32 1, i32* %i, align 4
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call void @g(i32* nonnull %i)
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ret void
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}
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; Check unwind info does not mention the registers used for padding, and
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; the amount of stack adjustment is the same as in the actual
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; instructions.
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; CHECK-ARM: .save {r11, lr}
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; CHECK-ARM-NEXT: .pad #8
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; CHECK-ARM-NEXT: push {r9, r10, r11, lr}
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; CHECK-ARM: pop {r2, r3, r11, pc}
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; CHECK-THM: .save {r7, lr}
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; CHECK-THM-NEXT: .pad #8
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; CHECK-THM-NEXT: push {r5, r6, r7, lr}
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; CHECK-THM: pop {r2, r3, r7, pc}
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define void @f1() local_unnamed_addr #1 {
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entry:
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%i = alloca i32, align 4
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%0 = bitcast i32* %i to i8*
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store i32 1, i32* %i, align 4
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call void @g(i32* nonnull %i)
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ret void
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}
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; Check that unwind info is the same whether or not using -Os (minsize attr)
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; CHECK-ARM: .save {r11, lr}
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; CHECK-ARM-NEXT: push {r11, lr}
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; CHECK-ARM-NEXT: .pad #8
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; CHECK-THM: .save {r7, lr}
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; CHECK-THM-NEXT: push {r7, lr}
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; CHECK-THM-NEXT: .pad #8
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attributes #0 = { minsize optsize }
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attributes #1 = { optsize }
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