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| author | Bill Wendling <isanbard@gmail.com> | 2013-12-02 07:38:06 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2013-12-02 07:38:06 +0000 |
| commit | 1b26fdbf1f01e90b803cc035b6b932cd95c76830 (patch) | |
| tree | c9717538bdb0fd127cbdd8cba12633cb32552fa8 /test | |
| parent | 3d238de4d54eb0b16afd96a57f49f92b2f7748e0 (diff) | |
| download | external_llvm-1b26fdbf1f01e90b803cc035b6b932cd95c76830.zip external_llvm-1b26fdbf1f01e90b803cc035b6b932cd95c76830.tar.gz external_llvm-1b26fdbf1f01e90b803cc035b6b932cd95c76830.tar.bz2 | |
Merging r196046:
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r196046 | tnorthover | 2013-12-01 06:16:24 -0800 (Sun, 01 Dec 2013) | 8 lines
ARM: fix bug in -Oz stack adjustment folding
Previously, we clobbered callee-saved registers when folding an "add
sp, #N" into a "pop {rD, ...}" instruction. This change checks whether
a register we're going to add to the "pop" could actually be live
outside the function before doing so and should fix the issue.
This should fix PR18081.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@196074 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/fold-stack-adjust.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/test/CodeGen/ARM/fold-stack-adjust.ll b/test/CodeGen/ARM/fold-stack-adjust.ll index c8c48fa..8bda768 100644 --- a/test/CodeGen/ARM/fold-stack-adjust.ll +++ b/test/CodeGen/ARM/fold-stack-adjust.ll @@ -15,7 +15,7 @@ define void @check_simple() minsize { ; CHECK-NOT: sub sp, sp, ; ... ; CHECK-NOT: add sp, sp, -; CHECK: pop.w {r7, r8, r9, r10, r11, pc} +; CHECK: pop.w {r0, r1, r2, r3, r11, pc} ; CHECK-T1-LABEL: check_simple: ; CHECK-T1: push {r3, r4, r5, r6, r7, lr} @@ -23,7 +23,7 @@ define void @check_simple() minsize { ; CHECK-T1-NOT: sub sp, sp, ; ... ; CHECK-T1-NOT: add sp, sp, -; CHECK-T1: pop {r3, r4, r5, r6, r7, pc} +; CHECK-T1: pop {r0, r1, r2, r3, r7, pc} ; iOS always has a frame pointer and messing with the push affects ; how it's set in the prologue. Make sure we get that right. |