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| author | Puyan Lotfi <puyan@puyan.org> | 2018-04-16 09:03:03 +0000 |
|---|---|---|
| committer | Puyan Lotfi <puyan@puyan.org> | 2018-04-16 09:03:03 +0000 |
| commit | 14b6637edc41125997bf395f1a3504e7288b0e93 (patch) | |
| tree | b9a4bff6f5335a446139d74f9dac4ee42b077e95 /llvm/test/CodeGen | |
| parent | fab368099010e07ca440c6b3f392686301347067 (diff) | |
| download | bcm5719-llvm-14b6637edc41125997bf395f1a3504e7288b0e93.tar.gz bcm5719-llvm-14b6637edc41125997bf395f1a3504e7288b0e93.zip | |
[MIR-Canon] Adding ISA-Agnostic COPY Folding.
Transforms the following:
%vreg1234:gpr32 = COPY %42
%vreg1235:gpr32 = COPY %vreg1234
%vreg1236:gpr32 = COPY %vreg1235
$w0 = COPY %vreg1236
into:
$w0 = COPY %42
Assuming %42 is also a gpr32
llvm-svn: 330113
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/MIR/AArch64/mirCanonCopyCopyProp.mir | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/MIR/AArch64/mirCanonCopyCopyProp.mir b/llvm/test/CodeGen/MIR/AArch64/mirCanonCopyCopyProp.mir new file mode 100644 index 00000000000..f3c20075860 --- /dev/null +++ b/llvm/test/CodeGen/MIR/AArch64/mirCanonCopyCopyProp.mir @@ -0,0 +1,45 @@ +# RUN: llc -mtriple=arm64-apple-ios11.0.0 -o - -run-pass mir-canonicalizer %s | FileCheck %s + +... +--- +name: Proc8 +stack: + - { id: 0, type: default, offset: 0, size: 4, alignment: 4, + stack-id: 0, callee-saved-register: '', callee-saved-restored: true, + local-offset: -4, di-variable: '', di-expression: '', di-location: '' } + - { id: 1, type: default, offset: 0, size: 8, alignment: 8, + stack-id: 0, callee-saved-register: '', callee-saved-restored: true, + local-offset: -16, di-variable: '', di-expression: '', di-location: '' } + - { id: 2, type: default, offset: 0, size: 8, alignment: 8, + stack-id: 0, callee-saved-register: '', callee-saved-restored: true, + local-offset: -24, di-variable: '', di-expression: '', di-location: '' } + - { id: 3, type: default, offset: 0, size: 8, alignment: 8, + stack-id: 0, callee-saved-register: '', callee-saved-restored: true, + local-offset: -32, di-variable: '', di-expression: '', di-location: '' } + - { id: 4, type: default, offset: 0, size: 8, alignment: 8, + stack-id: 0, callee-saved-register: '', callee-saved-restored: true, + local-offset: -40, di-variable: '', di-expression: '', di-location: '' } + - { id: 5, type: default, offset: 0, size: 8, alignment: 8, + stack-id: 0, callee-saved-register: '', callee-saved-restored: true, + local-offset: -48, di-variable: '', di-expression: '', di-location: '' } + - { id: 6, type: default, offset: 0, size: 8, alignment: 8, + stack-id: 0, callee-saved-register: '', callee-saved-restored: true, + local-offset: -56, di-variable: '', di-expression: '', di-location: '' } +constants: +body: | + bb.0: + liveins: $x0, $x1, $d0, $d1 + + %42:gpr32 = LDRWui %stack.0, 0 :: (dereferenceable load 8) + + ;CHECK: %namedVReg1352:gpr32 = LDRWui %stack.0, 0 :: (dereferenceable load 8) + ;CHECK: $w0 = COPY %namedVReg1352 + ;CHECK: RET_ReallyLR implicit $w0 + + %vreg1234:gpr32 = COPY %42 + %vreg1235:gpr32 = COPY %vreg1234 + %vreg1236:gpr32 = COPY %vreg1235 + $w0 = COPY %vreg1236 + RET_ReallyLR implicit $w0 + +... |
