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| author | Michael Kuperstein <mkuper@google.com> | 2016-11-23 18:33:49 +0000 |
|---|---|---|
| committer | Michael Kuperstein <mkuper@google.com> | 2016-11-23 18:33:49 +0000 |
| commit | 47eb85a0033fd21764fe100e736c3ec54d4f741f (patch) | |
| tree | 87b3a0867fc7cfd6773183ffa1082de972f1bbc8 /llvm/test/CodeGen/X86/partial-fold32.ll | |
| parent | 3c3fe5d885b8772634a7571907400580873ab611 (diff) | |
| download | bcm5719-llvm-47eb85a0033fd21764fe100e736c3ec54d4f741f.tar.gz bcm5719-llvm-47eb85a0033fd21764fe100e736c3ec54d4f741f.zip | |
[X86] Allow folding of stack reloads when loading a subreg of the spilled reg
We did not support subregs in InlineSpiller:foldMemoryOperand() because targets
may not deal with them correctly.
This adds a target hook to let the spiller know that a target can handle
subregs, and actually enables it for x86 for the case of stack slot reloads.
This fixes PR30832.
Differential Revision: https://reviews.llvm.org/D26521
llvm-svn: 287792
Diffstat (limited to 'llvm/test/CodeGen/X86/partial-fold32.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/partial-fold32.ll | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/llvm/test/CodeGen/X86/partial-fold32.ll b/llvm/test/CodeGen/X86/partial-fold32.ll index ba3f73ba90f..7fc1ed3521e 100644 --- a/llvm/test/CodeGen/X86/partial-fold32.ll +++ b/llvm/test/CodeGen/X86/partial-fold32.ll @@ -3,8 +3,7 @@ define fastcc i8 @fold32to8(i32 %add, i8 %spill) { ; CHECK-LABEL: fold32to8: ; CHECK: movl %ecx, (%esp) # 4-byte Spill -; CHECK: movl (%esp), %eax # 4-byte Reload -; CHECK: subb %al, %dl +; CHECK: subb (%esp), %dl # 1-byte Folded Reload entry: tail call void asm sideeffect "", "~{eax},~{ebx},~{ecx},~{edi},~{esi},~{ebp},~{dirflag},~{fpsr},~{flags}"() %trunc = trunc i32 %add to i8 |
