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| ; RUN: opt -O3 -S < %s | FileCheck %s
; Show 'optnone' suppresses optimizations.
; Two attribute groups that differ only by 'optnone'.
; 'optnone' requires 'noinline' so #0 is 'noinline' by itself,
; even though it would otherwise be irrelevant to this example.
attributes #0 = { noinline }
attributes #1 = { noinline optnone }
; int iadd(int a, int b){ return a + b; }
define i32 @iadd_optimize(i32 %a, i32 %b) #0 {
entry:
%a.addr = alloca i32, align 4
%b.addr = alloca i32, align 4
store i32 %a, i32* %a.addr, align 4
store i32 %b, i32* %b.addr, align 4
%0 = load i32, i32* %a.addr, align 4
%1 = load i32, i32* %b.addr, align 4
%add = add nsw i32 %0, %1
ret i32 %add
}
; CHECK-LABEL: @iadd_optimize
; CHECK-NOT: alloca
; CHECK-NOT: store
; CHECK-NOT: load
; CHECK: ret
define i32 @iadd_optnone(i32 %a, i32 %b) #1 {
entry:
%a.addr = alloca i32, align 4
%b.addr = alloca i32, align 4
store i32 %a, i32* %a.addr, align 4
store i32 %b, i32* %b.addr, align 4
%0 = load i32, i32* %a.addr, align 4
%1 = load i32, i32* %b.addr, align 4
%add = add nsw i32 %0, %1
ret i32 %add
}
; CHECK-LABEL: @iadd_optnone
; CHECK: alloca i32
; CHECK: alloca i32
; CHECK: store i32
; CHECK: store i32
; CHECK: load i32
; CHECK: load i32
; CHECK: add nsw i32
; CHECK: ret i32
; float fsub(float a, float b){ return a - b; }
define float @fsub_optimize(float %a, float %b) #0 {
entry:
%a.addr = alloca float, align 4
%b.addr = alloca float, align 4
store float %a, float* %a.addr, align 4
store float %b, float* %b.addr, align 4
%0 = load float, float* %a.addr, align 4
%1 = load float, float* %b.addr, align 4
%sub = fsub float %0, %1
ret float %sub
}
; CHECK-LABEL: @fsub_optimize
; CHECK-NOT: alloca
; CHECK-NOT: store
; CHECK-NOT: load
; CHECK: ret
define float @fsub_optnone(float %a, float %b) #1 {
entry:
%a.addr = alloca float, align 4
%b.addr = alloca float, align 4
store float %a, float* %a.addr, align 4
store float %b, float* %b.addr, align 4
%0 = load float, float* %a.addr, align 4
%1 = load float, float* %b.addr, align 4
%sub = fsub float %0, %1
ret float %sub
}
; CHECK-LABEL: @fsub_optnone
; CHECK: alloca float
; CHECK: alloca float
; CHECK: store float
; CHECK: store float
; CHECK: load float
; CHECK: load float
; CHECK: fsub float
; CHECK: ret float
; typedef float __attribute__((ext_vector_type(4))) float4;
; float4 vmul(float4 a, float4 b){ return a * b; }
define <4 x float> @vmul_optimize(<4 x float> %a, <4 x float> %b) #0 {
entry:
%a.addr = alloca <4 x float>, align 16
%b.addr = alloca <4 x float>, align 16
store <4 x float> %a, <4 x float>* %a.addr, align 16
store <4 x float> %b, <4 x float>* %b.addr, align 16
%0 = load <4 x float>, <4 x float>* %a.addr, align 16
%1 = load <4 x float>, <4 x float>* %b.addr, align 16
%mul = fmul <4 x float> %0, %1
ret <4 x float> %mul
}
; CHECK-LABEL: @vmul_optimize
; CHECK-NOT: alloca
; CHECK-NOT: store
; CHECK-NOT: load
; CHECK: ret
define <4 x float> @vmul_optnone(<4 x float> %a, <4 x float> %b) #1 {
entry:
%a.addr = alloca <4 x float>, align 16
%b.addr = alloca <4 x float>, align 16
store <4 x float> %a, <4 x float>* %a.addr, align 16
store <4 x float> %b, <4 x float>* %b.addr, align 16
%0 = load <4 x float>, <4 x float>* %a.addr, align 16
%1 = load <4 x float>, <4 x float>* %b.addr, align 16
%mul = fmul <4 x float> %0, %1
ret <4 x float> %mul
}
; CHECK-LABEL: @vmul_optnone
; CHECK: alloca <4 x float>
; CHECK: alloca <4 x float>
; CHECK: store <4 x float>
; CHECK: store <4 x float>
; CHECK: load <4 x float>
; CHECK: load <4 x float>
; CHECK: fmul <4 x float>
; CHECK: ret
|