diff options
Diffstat (limited to 'llvm/test/CodeGen/AMDGPU/promote-alloca-to-lds-phi.ll')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/promote-alloca-to-lds-phi.ll | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/promote-alloca-to-lds-phi.ll b/llvm/test/CodeGen/AMDGPU/promote-alloca-to-lds-phi.ll new file mode 100644 index 00000000000..c76cc85a11d --- /dev/null +++ b/llvm/test/CodeGen/AMDGPU/promote-alloca-to-lds-phi.ll @@ -0,0 +1,170 @@ +; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=kaveri -amdgpu-promote-alloca < %s | FileCheck %s + + +; CHECK-LABEL: @branch_ptr_var_same_alloca( +; CHECK: getelementptr inbounds [256 x [64 x i32]], [256 x [64 x i32]] addrspace(3)* @branch_ptr_var_same_alloca.alloca, i32 0, i32 %{{[0-9]+}} + +; CHECK: if: +; CHECK: %arrayidx0 = getelementptr inbounds [64 x i32], [64 x i32] addrspace(3)* %{{[0-9]+}}, i32 0, i32 %a + +; CHECK: else: +; CHECK: %arrayidx1 = getelementptr inbounds [64 x i32], [64 x i32] addrspace(3)* %15, i32 0, i32 %b + +; CHECK: endif: +; CHECK: %phi.ptr = phi i32 addrspace(3)* [ %arrayidx0, %if ], [ %arrayidx1, %else ] +; CHECK: store i32 0, i32 addrspace(3)* %phi.ptr, align 4 +define void @branch_ptr_var_same_alloca(i32 %a, i32 %b) #0 { +entry: + %alloca = alloca [64 x i32], align 4 + br i1 undef, label %if, label %else + +if: + %arrayidx0 = getelementptr inbounds [64 x i32], [64 x i32]* %alloca, i32 0, i32 %a + br label %endif + +else: + %arrayidx1 = getelementptr inbounds [64 x i32], [64 x i32]* %alloca, i32 0, i32 %b + br label %endif + +endif: + %phi.ptr = phi i32* [ %arrayidx0, %if ], [ %arrayidx1, %else ] + store i32 0, i32* %phi.ptr, align 4 + ret void +} + +; CHECK-LABEL: @one_phi_value( +; CHECK: getelementptr inbounds [256 x [64 x i32]], [256 x [64 x i32]] addrspace(3)* @one_phi_value.alloca, i32 0, i32 %14 +; CHECK: %arrayidx0 = getelementptr inbounds [64 x i32], [64 x i32] addrspace(3)* %{{[0-9]+}}, i32 0, i32 %a + +; CHECK: br label %exit +; CHECK: %phi.ptr = phi i32 addrspace(3)* [ %arrayidx0, %entry ] +; CHECK: store i32 0, i32 addrspace(3)* %phi.ptr, align 4 +define void @one_phi_value(i32 %a) #0 { +entry: + %alloca = alloca [64 x i32], align 4 + %arrayidx0 = getelementptr inbounds [64 x i32], [64 x i32]* %alloca, i32 0, i32 %a + br label %exit + +exit: + %phi.ptr = phi i32* [ %arrayidx0, %entry ] + store i32 0, i32* %phi.ptr, align 4 + ret void +} + +; CHECK-LABEL: @branch_ptr_alloca_unknown_obj( +; CHECK: %alloca = alloca [64 x i32], align 4 + +; CHECK: if: +; CHECK: %arrayidx0 = getelementptr inbounds [64 x i32], [64 x i32]* %alloca, i32 0, i32 %a + +; CHECK: else: +; CHECK: %arrayidx1 = call i32* @get_unknown_pointer() + +; CHECK: endif: +; CHECK: %phi.ptr = phi i32* [ %arrayidx0, %if ], [ %arrayidx1, %else ] +; CHECK: store i32 0, i32* %phi.ptr, align 4 +define void @branch_ptr_alloca_unknown_obj(i32 %a, i32 %b) #0 { +entry: + %alloca = alloca [64 x i32], align 4 + br i1 undef, label %if, label %else + +if: + %arrayidx0 = getelementptr inbounds [64 x i32], [64 x i32]* %alloca, i32 0, i32 %a + br label %endif + +else: + %arrayidx1 = call i32* @get_unknown_pointer() + br label %endif + +endif: + %phi.ptr = phi i32* [ %arrayidx0, %if ], [ %arrayidx1, %else ] + store i32 0, i32* %phi.ptr, align 4 + ret void +} + +; kernel void ptr_induction_var_same_alloca(void) +; { +; int alloca[64]; +; int i = 0; + +; #pragma nounroll +; for (int* p = &alloca[2], *e = &alloca[48]; p != e; ++p, ++i) +; { +; *p = i; +; } +; } + +; FIXME: This should be promotable. We need to use +; GetUnderlyingObjects when looking at the icmp user. + +; CHECK-LABEL: @ptr_induction_var_same_alloca( +; CHECK: %alloca = alloca [64 x i32], align 4 +; CHECK: phi i32* [ %arrayidx, %entry ], [ %incdec.ptr, %for.body ] +define void @ptr_induction_var_same_alloca() #0 { +entry: + %alloca = alloca [64 x i32], align 4 + %arrayidx = getelementptr inbounds [64 x i32], [64 x i32]* %alloca, i32 0, i32 2 + %arrayidx1 = getelementptr inbounds [64 x i32], [64 x i32]* %alloca, i32 0, i32 48 + br label %for.body + +for.cond.cleanup: ; preds = %for.body + ret void + +for.body: ; preds = %for.body, %entry + %i.09 = phi i32 [ 0, %entry ], [ %inc, %for.body ] + %p.08 = phi i32* [ %arrayidx, %entry ], [ %incdec.ptr, %for.body ] + store i32 %i.09, i32* %p.08, align 4 + %incdec.ptr = getelementptr inbounds i32, i32* %p.08, i32 1 + %inc = add nuw nsw i32 %i.09, 1 + %cmp = icmp eq i32* %incdec.ptr, %arrayidx1 + br i1 %cmp, label %for.cond.cleanup, label %for.body +} + + +; extern int* get_unknown_pointer(void); + +; kernel void ptr_induction_var_alloca_unknown(void) +; { +; int alloca[64]; +; int i = 0; +; +; for (int* p = &alloca[2], *e = get_unknown_pointer(); p != e; ++p, ++i) +; { +; *p = i; +; } +; } + +; CHECK-LABEL: @ptr_induction_var_alloca_unknown( +; CHECK: %alloca = alloca [64 x i32], align 4 +; CHECK: %p.08 = phi i32* [ %incdec.ptr, %for.body ], [ %arrayidx, %for.body.preheader ] +; CHECK: %cmp = icmp eq i32* %incdec.ptr, %call +define void @ptr_induction_var_alloca_unknown() #0 { +entry: + %alloca = alloca [64 x i32], align 4 + %arrayidx = getelementptr inbounds [64 x i32], [64 x i32]* %alloca, i32 0, i32 2 + %call = tail call i32* @get_unknown_pointer() #2 + %cmp.7 = icmp eq i32* %arrayidx, %call + br i1 %cmp.7, label %for.cond.cleanup, label %for.body.preheader + +for.body.preheader: ; preds = %entry + br label %for.body + +for.cond.cleanup.loopexit: ; preds = %for.body + br label %for.cond.cleanup + +for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry + ret void + +for.body: ; preds = %for.body, %for.body.preheader + %i.09 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] + %p.08 = phi i32* [ %incdec.ptr, %for.body ], [ %arrayidx, %for.body.preheader ] + store i32 %i.09, i32* %p.08, align 4 + %incdec.ptr = getelementptr inbounds i32, i32* %p.08, i32 1 + %inc = add nuw nsw i32 %i.09, 1 + %cmp = icmp eq i32* %incdec.ptr, %call + br i1 %cmp, label %for.cond.cleanup.loopexit, label %for.body +} + +declare i32* @get_unknown_pointer() #0 + +attributes #0 = { nounwind } |
