Merging r260427:

[oota-llvm.git] / test / CodeGen / AMDGPU / spill-scavenge-offset.ll

diff --git a/test/CodeGen/AMDGPU/spill-scavenge-offset.ll b/test/CodeGen/AMDGPU/spill-scavenge-offset.ll
new file mode 100644 (file)
index 0000000..4a12ed5
--- /dev/null
+++ b/test/CodeGen/AMDGPU/spill-scavenge-offset.ll
@@ -0,0 +1,33 @@
+; RUN: llc -march=amdgcn -mcpu=verde < %s | FileCheck %s
+; RUN: llc -march=amdgcn -mcpu=tonga < %s | FileCheck %s
+
+; When the offset of VGPR spills into scratch space gets too large, an additional SGPR
+; is used to calculate the scratch load/store address. Make sure that this
+; mechanism works even when many spills happen.
+
+; Just test that it compiles successfully.
+; CHECK-LABEL: test
+define void @test(<1280 x i32> addrspace(1)* %out, <1280 x i32> addrspace(1)* %in,
+                  <96 x i32> addrspace(1)* %sdata_out, <96 x i32> %sdata_in) {
+entry:
+  %tid = call i32 @llvm.SI.tid() nounwind readnone
+
+  %aptr = getelementptr <1280 x i32>, <1280 x i32> addrspace(1)* %in, i32 %tid
+  %a = load <1280 x i32>, <1280 x i32> addrspace(1)* %aptr
+
+; mark most VGPR registers as used to increase register pressure
+  call void asm sideeffect "", "~{VGPR4},~{VGPR8},~{VGPR12},~{VGPR16},~{VGPR20},~{VGPR24},~{VGPR28},~{VGPR32}" ()
+  call void asm sideeffect "", "~{VGPR36},~{VGPR40},~{VGPR44},~{VGPR48},~{VGPR52},~{VGPR56},~{VGPR60},~{VGPR64}" ()
+  call void asm sideeffect "", "~{VGPR68},~{VGPR72},~{VGPR76},~{VGPR80},~{VGPR84},~{VGPR88},~{VGPR92},~{VGPR96}" ()
+  call void asm sideeffect "", "~{VGPR100},~{VGPR104},~{VGPR108},~{VGPR112},~{VGPR116},~{VGPR120},~{VGPR124},~{VGPR128}" ()
+  call void asm sideeffect "", "~{VGPR132},~{VGPR136},~{VGPR140},~{VGPR144},~{VGPR148},~{VGPR152},~{VGPR156},~{VGPR160}" ()
+  call void asm sideeffect "", "~{VGPR164},~{VGPR168},~{VGPR172},~{VGPR176},~{VGPR180},~{VGPR184},~{VGPR188},~{VGPR192}" ()
+  call void asm sideeffect "", "~{VGPR196},~{VGPR200},~{VGPR204},~{VGPR208},~{VGPR212},~{VGPR216},~{VGPR220},~{VGPR224}" ()
+
+  %outptr = getelementptr <1280 x i32>, <1280 x i32> addrspace(1)* %in, i32 %tid
+  store <1280 x i32> %a, <1280 x i32> addrspace(1)* %outptr
+
+  ret void
+}
+
+declare i32 @llvm.SI.tid() nounwind readnone