AMDGPU: Always allocate emergency stack slot at offset 0
This allows us to ensure that 0 is never a valid pointer
to a user object, and ensures that the offset is always legal
without needing a register to access it. This comes at the cost
of usable offsets and wasted stack space.
llvm-svn: 295877
diff --git a/llvm/test/CodeGen/AMDGPU/kernarg-stack-alignment.ll b/llvm/test/CodeGen/AMDGPU/kernarg-stack-alignment.ll
index 21c92db..aaa63f7 100644
--- a/llvm/test/CodeGen/AMDGPU/kernarg-stack-alignment.ll
+++ b/llvm/test/CodeGen/AMDGPU/kernarg-stack-alignment.ll
@@ -4,7 +4,7 @@
; alignment of the stack
; CHECK-LABEL: {{^}}no_args:
-; CHECK: ScratchSize: 8{{$}}
+; CHECK: ScratchSize: 5{{$}}
define void @no_args() {
%alloca = alloca i8
store volatile i8 0, i8* %alloca
@@ -12,7 +12,7 @@
}
; CHECK-LABEL: {{^}}force_align32:
-; CHECK: ScratchSize: 8{{$}}
+; CHECK: ScratchSize: 5{{$}}
define void @force_align32(<8 x i32>) {
%alloca = alloca i8
store volatile i8 0, i8* %alloca
@@ -20,7 +20,7 @@
}
; CHECK-LABEL: {{^}}force_align64:
-; CHECK: ScratchSize: 8{{$}}
+; CHECK: ScratchSize: 5{{$}}
define void @force_align64(<16 x i32>) {
%alloca = alloca i8
store volatile i8 0, i8* %alloca
@@ -28,7 +28,7 @@
}
; CHECK-LABEL: {{^}}force_align128:
-; CHECK: ScratchSize: 8{{$}}
+; CHECK: ScratchSize: 5{{$}}
define void @force_align128(<32 x i32>) {
%alloca = alloca i8
store volatile i8 0, i8* %alloca
@@ -36,7 +36,7 @@
}
; CHECK-LABEL: {{^}}force_align256:
-; CHECK: ScratchSize: 8{{$}}
+; CHECK: ScratchSize: 5{{$}}
define void @force_align256(<64 x i32>) {
%alloca = alloca i8
store volatile i8 0, i8* %alloca
