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| author | Tom Stellard <tstellar@redhat.com> | 2018-04-09 20:45:48 +0000 |
|---|---|---|
| committer | Tom Stellard <tstellar@redhat.com> | 2018-04-09 20:45:48 +0000 |
| commit | 48e90723eaeaca411c2d9893a1cc44ef5fae109d (patch) | |
| tree | 36b084c9202be2133a3946489c86a77b0393cffd /test | |
| parent | a7769cbdb107428ce7bab197ec65aa96aa127020 (diff) | |
Merging r322319:
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r322319 | matze | 2018-01-11 14:30:43 -0800 (Thu, 11 Jan 2018) | 7 lines
PeepholeOptimizer: Fix for vregs without defs
The PeepholeOptimizer would fail for vregs without a definition. If this
was caused by an undef operand abort to keep the code simple (so we
don't need to add logic everywhere to replicate the undef flag).
Differential Revision: https://reviews.llvm.org/D40763
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_60@329619 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/peephole-phi.mir | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/peephole-phi.mir b/test/CodeGen/ARM/peephole-phi.mir index 30343654dea..54ae0115840 100644 --- a/test/CodeGen/ARM/peephole-phi.mir +++ b/test/CodeGen/ARM/peephole-phi.mir @@ -65,3 +65,39 @@ body: | %4:gpr = PHI %0, %bb.1, %2, %bb.2 %5:spr = VMOVSR %4, 14, %noreg ... + +# The current implementation doesn't perform any transformations if undef +# operands are involved. +# CHECK-LABEL: name: func-undefops +# CHECK: body: | +# CHECK: bb.0: +# CHECK: Bcc %bb.2, 1, undef %cpsr +# +# CHECK: bb.1: +# CHECK: %0:gpr = VMOVRS undef %1:spr, 14, %noreg +# CHECK: B %bb.3 +# +# CHECK: bb.2: +# CHECK: %2:gpr = VMOVRS undef %3:spr, 14, %noreg +# +# CHECK: bb.3: +# CHECK: %4:gpr = PHI %0, %bb.1, %2, %bb.2 +# CHECK: %5:spr = VMOVSR %4, 14, %noreg +--- +name: func-undefops +tracksRegLiveness: true +body: | + bb.0: + Bcc %bb.2, 1, undef %cpsr + + bb.1: + %0:gpr = VMOVRS undef %1:spr, 14, %noreg + B %bb.3 + + bb.2: + %2:gpr = VMOVRS undef %3:spr, 14, %noreg + + bb.3: + %4:gpr = PHI %0, %bb.1, %2, %bb.2 + %5:spr = VMOVSR %4, 14, %noreg +... |