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author | Stephen Hines <srhines@google.com> | 2014-05-29 02:49:00 -0700 |
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committer | Stephen Hines <srhines@google.com> | 2014-05-29 02:49:00 -0700 |
commit | dce4a407a24b04eebc6a376f8e62b41aaa7b071f (patch) | |
tree | dcebc53f2b182f145a2e659393bf9a0472cedf23 /test/CodeGen/R600/simplify-demanded-bits-build-pair.ll | |
parent | 220b921aed042f9e520c26cffd8282a94c66c3d5 (diff) | |
download | external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.zip external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.tar.gz external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.tar.bz2 |
Update LLVM for 3.5 rebase (r209712).
Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
Diffstat (limited to 'test/CodeGen/R600/simplify-demanded-bits-build-pair.ll')
-rw-r--r-- | test/CodeGen/R600/simplify-demanded-bits-build-pair.ll | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/test/CodeGen/R600/simplify-demanded-bits-build-pair.ll b/test/CodeGen/R600/simplify-demanded-bits-build-pair.ll new file mode 100644 index 0000000..d9f60ea --- /dev/null +++ b/test/CodeGen/R600/simplify-demanded-bits-build-pair.ll @@ -0,0 +1,36 @@ +; RUN: llc -verify-machineinstrs -march=r600 -mcpu=SI < %s | FileCheck -check-prefix=SI %s + +; 64-bit select was originally lowered with a build_pair, and this +; could be simplified to 1 cndmask instead of 2, but that broken when +; it started being implemented with a v2i32 build_vector and +; bitcasting. +define void @trunc_select_i64(i32 addrspace(1)* %out, i64 %a, i64 %b, i32 %c) { + %cmp = icmp eq i32 %c, 0 + %select = select i1 %cmp, i64 %a, i64 %b + %trunc = trunc i64 %select to i32 + store i32 %trunc, i32 addrspace(1)* %out, align 4 + ret void +} + +; SI-LABEL: @trunc_load_alloca_i64: +; SI: V_MOVRELS_B32 +; SI-NOT: V_MOVRELS_B32 +; SI: S_ENDPGM +define void @trunc_load_alloca_i64(i64 addrspace(1)* %out, i32 %a, i32 %b) { + %idx = add i32 %a, %b + %alloca = alloca i64, i32 4 + %gep0 = getelementptr i64* %alloca, i64 0 + %gep1 = getelementptr i64* %alloca, i64 1 + %gep2 = getelementptr i64* %alloca, i64 2 + %gep3 = getelementptr i64* %alloca, i64 3 + store i64 24, i64* %gep0, align 8 + store i64 9334, i64* %gep1, align 8 + store i64 3935, i64* %gep2, align 8 + store i64 9342, i64* %gep3, align 8 + %gep = getelementptr i64* %alloca, i32 %idx + %load = load i64* %gep, align 8 + %mask = and i64 %load, 4294967296 + %add = add i64 %mask, -1 + store i64 %add, i64 addrspace(1)* %out, align 4 + ret void +} |