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authorStephen Hines <srhines@google.com>2014-05-29 02:49:00 -0700
committerStephen Hines <srhines@google.com>2014-05-29 02:49:00 -0700
commitdce4a407a24b04eebc6a376f8e62b41aaa7b071f (patch)
treedcebc53f2b182f145a2e659393bf9a0472cedf23 /test/CodeGen/R600/simplify-demanded-bits-build-pair.ll
parent220b921aed042f9e520c26cffd8282a94c66c3d5 (diff)
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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.ll36
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
+}