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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-03-25 18:51:57 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-03-25 18:51:57 +0000 |
| commit | 167af1bafbf0a2a9149f03315f7a30a8425db408 (patch) | |
| tree | d3c9a6b64f0527eff2c7e21e4a95fe9218b1baa3 /llvm/test/CodeGen/SPARC | |
| parent | 3bd4b5a925bd5bd5a5498d8d84596ec099e9c198 (diff) | |
| download | bcm5719-llvm-167af1bafbf0a2a9149f03315f7a30a8425db408.tar.gz bcm5719-llvm-167af1bafbf0a2a9149f03315f7a30a8425db408.zip | |
[SelectionDAG] Add icmp UNDEF handling to SelectionDAG::FoldSetCC
First half of PR40800, this patch adds DAG undef handling to icmp instructions to match the behaviour in llvm::ConstantFoldCompareInstruction and SimplifyICmpInst, this permits constant folding of vector comparisons where some elements had been reduced to UNDEF (by SimplifyDemandedVectorElts etc.).
This involved a lot of tweaking to reduced tests as bugpoint loves to reduce icmp arguments to undef........
Differential Revision: https://reviews.llvm.org/D59363
llvm-svn: 356938
Diffstat (limited to 'llvm/test/CodeGen/SPARC')
| -rw-r--r-- | llvm/test/CodeGen/SPARC/missinglabel.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/CodeGen/SPARC/missinglabel.ll b/llvm/test/CodeGen/SPARC/missinglabel.ll index dd73a565092..60a3641ccea 100644 --- a/llvm/test/CodeGen/SPARC/missinglabel.ll +++ b/llvm/test/CodeGen/SPARC/missinglabel.ll @@ -4,7 +4,7 @@ target datalayout = "E-m:e-i64:64-n32:64-S128" target triple = "sparc64-unknown-linux-gnu" -define void @f() align 2 { +define void @f(i64 %a0) align 2 { ; CHECK-LABEL: f: ; CHECK: .cfi_startproc ; CHECK-NEXT: ! %bb.0: ! %entry @@ -22,7 +22,7 @@ define void @f() align 2 { ; CHECK-NEXT: .LBB0_1: ! %cond.false ; CHECK-NEXT: .LBB0_4: ! %exit.i85 entry: - %cmp = icmp eq i64 undef, 0 + %cmp = icmp eq i64 %a0, 0 br i1 %cmp, label %targetblock, label %cond.false cond.false: |
