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| author | Francis Visoiu Mistrih <francisvm@yahoo.com> | 2018-03-14 17:10:58 +0000 |
|---|---|---|
| committer | Francis Visoiu Mistrih <francisvm@yahoo.com> | 2018-03-14 17:10:58 +0000 |
| commit | 084e7d8770a27a7caf80a6eb63fbe07d61c6b198 (patch) | |
| tree | 9250e3ef9743a42581e9b8d06fd6e7ae6713afba /llvm/test/CodeGen/AArch64 | |
| parent | bec5df2d05de26b136192d1a57e7638a703d2f06 (diff) | |
| download | bcm5719-llvm-084e7d8770a27a7caf80a6eb63fbe07d61c6b198.tar.gz bcm5719-llvm-084e7d8770a27a7caf80a6eb63fbe07d61c6b198.zip | |
[AArch64] Keep track of MIFlags in the LoadStoreOptimizer
Merging:
* $x26, $x25 = frame-setup LDPXi $sp, 0
* $sp = frame-destroy ADDXri $sp, 64, 0
into an LDPXpost should preserve the flags from both instructions as
following:
* frame-setup frame-destroy LDPXpost
Differential Revision: https://reviews.llvm.org/D44446
llvm-svn: 327533
Diffstat (limited to 'llvm/test/CodeGen/AArch64')
| -rw-r--r-- | llvm/test/CodeGen/AArch64/ldst-miflags.mir | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AArch64/ldst-miflags.mir b/llvm/test/CodeGen/AArch64/ldst-miflags.mir new file mode 100644 index 00000000000..73ca0cae9f4 --- /dev/null +++ b/llvm/test/CodeGen/AArch64/ldst-miflags.mir @@ -0,0 +1,99 @@ +# RUN: llc -run-pass=aarch64-ldst-opt -o - -mtriple=aarch64-- %s | FileCheck %s +# Check that we merge the MIFlags from both the instructions in the final +# instruction. +--- +name: case11 +# CHECK-LABEL: name: case11 +body: | + bb.0: + frame-setup STRWui $w1, $x0, 1 :: (store 4) + $w1 = frame-destroy LDRWui $x0, 1 :: (load 4) + + ; CHECK: frame-setup STRWui + ; CHECK-NOT: frame-setup + ; CHECK-NEXT: frame-destroy ORRWrs + ; No merging happening here, make sure we keep the flags of the previous + ; instruction. + RET_ReallyLR + +... +--- +name: case12 +# CHECK-LABEL: name: case12 +body: | + bb.0: + frame-setup STRWui $w1, $x0, 1 :: (store 4) + $w2 = frame-destroy LDRHHui $x0, 2 :: (load 2) + + ; CHECK: frame-setup STRWui + ; CHECK-NOT: frame-setup + ; CHECK-NEXT: frame-destroy ANDWri + ; No merging happening here, make sure we keep the flags of the previous + ; instruction. + RET_ReallyLR + +... +--- +name: case13 +# CHECK-LABEL: name: case13 +body: | + bb.0: + frame-setup STRWui $w1, $x0, 1 :: (store 4) + $w2 = frame-destroy LDRHHui $x0, 3 :: (load 2) + + ; CHECK: frame-setup STRWui + ; CHECK-NOT: frame-setup + ; CHECK-NEXT: frame-destroy UBFMWri + ; No merging happening here, make sure we keep the flags of the previous + ; instruction. + RET_ReallyLR + +... +--- +name: case2 +# CHECK-LABEL: name: case2 +body: | + bb.0: + frame-setup STRHHui $wzr, $x0, 0 :: (store 4) + frame-destroy STRHHui $wzr, $x0, 1 :: (store 4) + + ; CHECK: frame-setup frame-destroy STRWui + RET_ReallyLR + +... +--- +name: case3 +# CHECK-LABEL: name: case3 +body: | + bb.0: + + $x0 = frame-setup LDRXui $x2, 0 :: (load 8) + $x1 = frame-destroy LDRXui $x2, 1 :: (load 8) + + ; CHECK: frame-setup frame-destroy LDPXi + RET_ReallyLR +... +--- +name: case4 +# CHECK-LABEL: name: case4 +body: | + bb.0: + $x26, $x25 = frame-setup LDPXi $sp, 0 + $sp = frame-destroy ADDXri $sp, 64, 0 + + ; CHECK: = frame-setup frame-destroy LDPXpost + RET_ReallyLR + +... +--- +name: case41 +# CHECK-LABEL: name: case41 +body: | + bb.0: + $x26 = frame-setup LDRXui $sp, 0 + $sp = frame-destroy ADDXri $sp, 64, 0 + + ; CHECK: = frame-setup frame-destroy LDRXpost + RET_ReallyLR + +... |
