34 lines
869 B
LLVM
34 lines
869 B
LLVM
; RUN: llc -verify-machineinstrs -o /dev/null %s
|
|
; Check that renameDisconnectedComponents() does not create vregs without a
|
|
; definition on every path (there should at least be IMPLICIT_DEF instructions).
|
|
target triple = "amdgcn--"
|
|
|
|
define amdgpu_kernel void @func() {
|
|
B0:
|
|
br i1 undef, label %B1, label %B2
|
|
|
|
B1:
|
|
br label %B2
|
|
|
|
B2:
|
|
%v0 = phi <4 x float> [ zeroinitializer, %B1 ], [ <float 0.0, float 0.0, float 0.0, float undef>, %B0 ]
|
|
br i1 undef, label %B20.1, label %B20.2
|
|
|
|
B20.1:
|
|
br label %B20.2
|
|
|
|
B20.2:
|
|
%v2 = phi <4 x float> [ zeroinitializer, %B20.1 ], [ %v0, %B2 ]
|
|
br i1 undef, label %B30.1, label %B30.2
|
|
|
|
B30.1:
|
|
%sub = fsub <4 x float> %v2, undef
|
|
br label %B30.2
|
|
|
|
B30.2:
|
|
%v3 = phi <4 x float> [ %sub, %B30.1 ], [ %v2, %B20.2 ]
|
|
%ve0 = extractelement <4 x float> %v3, i32 0
|
|
store float %ve0, float addrspace(3)* undef, align 4
|
|
ret void
|
|
}
|