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| author | Eli Friedman <efriedma@codeaurora.org> | 2017-02-28 23:32:55 +0000 |
|---|---|---|
| committer | Eli Friedman <efriedma@codeaurora.org> | 2017-02-28 23:32:55 +0000 |
| commit | 36795239f57337f56b840a254d6b69cdcf918101 (patch) | |
| tree | a0253d40e96566559471ef66e68daf67433ab572 /llvm/test/CodeGen | |
| parent | 33fd0bbbe8b2d5dd98964877d4f4344633e3197b (diff) | |
| download | bcm5719-llvm-36795239f57337f56b840a254d6b69cdcf918101.tar.gz bcm5719-llvm-36795239f57337f56b840a254d6b69cdcf918101.zip | |
[ARM] Don't generate deprecated T1 STM.
This prevents generating stm r1!, {r0, r1} on Thumb1, where value
stored for r1 is UNKONWN.
Patch by Zhaoshi Zheng.
Differential Revision: https://reviews.llvm.org/D27910
llvm-svn: 296538
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/Thumb/stm-deprecated.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Thumb/stm-deprecated.ll b/llvm/test/CodeGen/Thumb/stm-deprecated.ll new file mode 100644 index 00000000000..ffe2c0afd92 --- /dev/null +++ b/llvm/test/CodeGen/Thumb/stm-deprecated.ll @@ -0,0 +1,19 @@ +; RUN: llc -mtriple=thumbv6m-eabi -verify-machineinstrs %s -o - | FileCheck %s +; RUN: llc -mtriple=thumbv5e-linux-gnueabi -verify-machineinstrs %s -o - | FileCheck %s + +%0 = type { %0*, %0*, i32 } + +@x1 = external global %0, align 4 +@x2 = external global %0, align 4 + +; CHECK: str r0, [r1] +; CHECK-NEXT: str r1, [r1, #4] +; CHECK-NOT: stm + +define void @foo(i32 %unused, %0* %x) { + %first = getelementptr inbounds %0, %0* %x, i32 0, i32 0 + %second = getelementptr inbounds %0, %0* %x, i32 0, i32 1 + store %0* @x1, %0** %first + store %0* %x, %0** %second + unreachable +} |
