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| author | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2018-11-16 23:13:38 +0000 |
|---|---|---|
| committer | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2018-11-16 23:13:38 +0000 |
| commit | 0ff7c8309d43c9678393e5add2d7550e1480e4f6 (patch) | |
| tree | 0050f5c3505d06927f8006a09bf6f55e35fb8d77 /llvm/test/CodeGen/Generic | |
| parent | d146e337edc10e3cefb52c46f69bc523d0bb40ab (diff) | |
| download | bcm5719-llvm-0ff7c8309d43c9678393e5add2d7550e1480e4f6.tar.gz bcm5719-llvm-0ff7c8309d43c9678393e5add2d7550e1480e4f6.zip | |
DAG combiner: fold (select, C, X, undef) -> X
Differential Revision: https://reviews.llvm.org/D54646
llvm-svn: 347110
Diffstat (limited to 'llvm/test/CodeGen/Generic')
| -rw-r--r-- | llvm/test/CodeGen/Generic/dag-combine-select-undef.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Generic/dag-combine-select-undef.ll b/llvm/test/CodeGen/Generic/dag-combine-select-undef.ll new file mode 100644 index 00000000000..bc741906187 --- /dev/null +++ b/llvm/test/CodeGen/Generic/dag-combine-select-undef.ll @@ -0,0 +1,24 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s | FileCheck %s + +define void @select_undef_n1(float addrspace(1)* %a, i32 %c) { +; CHECK-LABEL: select_undef_n1: +; CHECK: # %bb.0: +; CHECK-NEXT: movl $1065353216, (%rdi) # imm = 0x3F800000 +; CHECK-NEXT: retq + %cc = icmp eq i32 %c, 0 + %sel = select i1 %cc, float 1.000000e+00, float undef + store float %sel, float addrspace(1)* %a + ret void +} + +define void @select_undef_n2(float addrspace(1)* %a, i32 %c) { +; CHECK-LABEL: select_undef_n2: +; CHECK: # %bb.0: +; CHECK-NEXT: movl $1065353216, (%rdi) # imm = 0x3F800000 +; CHECK-NEXT: retq + %cc = icmp eq i32 %c, 0 + %sel = select i1 %cc, float undef, float 1.000000e+00 + store float %sel, float addrspace(1)* %a + ret void +} |
