forked from OSchip/llvm-project
65 lines
1.9 KiB
LLVM
65 lines
1.9 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
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;
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; CHECK: Function: f_no_fast_math
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; CHECK: Reduction Type: NONE
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; CHECK: Function: f_fast_math
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; CHECK: Reduction Type: ADD
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;
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; void f(float *sum) {
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; for (int i = 0; i < 100; i++)
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; *sum += 3.41 * i;
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; }
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
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define void @f_no_fast_math(float* %sum) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
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%exitcond = icmp ne i32 %i.0, 100
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br i1 %exitcond, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%conv = sitofp i32 %i.0 to float
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%pi = fptrunc double 3.41 to float
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%mul = fmul float %conv, %pi
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%tmp = load float* %sum, align 4
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%add = fadd float %tmp, %mul
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store float %add, float* %sum, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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%inc = add nsw i32 %i.0, 1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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define void @f_fast_math(float* %sum) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
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%exitcond = icmp ne i32 %i.0, 100
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br i1 %exitcond, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%conv = sitofp i32 %i.0 to float
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%pi = fptrunc double 3.41 to float
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%mul = fmul fast float %conv, %pi
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%tmp = load float* %sum, align 4
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%add = fadd fast float %tmp, %mul
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store float %add, float* %sum, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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%inc = add nsw i32 %i.0, 1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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