R600/SI: Add testcase I forgot to commit from months ago

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221384 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/R600/mad_int24.ll b/test/CodeGen/R600/mad_int24.ll
index 2b854aba312f4d3567c2b5f5695ce3c7f6c9ce80..c8dd3775bdf418c331c3f66046c20d8a0ea7eeb3 100644 (file)
--- a/test/CodeGen/R600/mad_int24.ll
+++ b/test/CodeGen/R600/mad_int24.ll
@@ -2,6 +2,8 @@
 ; RUN: llc < %s -march=r600 -mcpu=cayman | FileCheck %s --check-prefix=CM --check-prefix=FUNC
 ; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s --check-prefix=SI --check-prefix=FUNC
 
+declare i32 @llvm.AMDGPU.imul24(i32, i32) nounwind readnone
+
 ; FUNC-LABEL: {{^}}i32_mad24:
 ; Signed 24-bit multiply is not supported on pre-Cayman GPUs.
 ; EG: MULLO_INT
@@ -21,3 +23,12 @@ entry:
   store i32 %3, i32 addrspace(1)* %out
   ret void
 }
+
+; FUNC-LABEL: @test_imul24
+; SI: v_mad_i32_i24
+define void @test_imul24(i32 addrspace(1)* %out, i32 %src0, i32 %src1, i32 %src2) nounwind {
+  %mul = call i32 @llvm.AMDGPU.imul24(i32 %src0, i32 %src1) nounwind readnone
+  %add = add i32 %mul, %src2
+  store i32 %add, i32 addrspace(1)* %out, align 4
+  ret void
+}