You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
2.8 KiB
81 lines
2.8 KiB
; RUN: opt -basicaa -loop-idiom < %s -S | FileCheck %s
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
|
|
|
|
; CHECK @.memset_pattern = private unnamed_addr constant [4 x i32] [i32 2, i32 2, i32 2, i32 2], align 16
|
|
|
|
target triple = "x86_64-apple-darwin10.0.0"
|
|
|
|
;void test(int *f, unsigned n) {
|
|
; for (unsigned i = 0; i < 2 * n; i += 2) {
|
|
; f[i] = 0;
|
|
; f[i+1] = 0;
|
|
; }
|
|
;}
|
|
define void @test(i32* %f, i32 %n) nounwind ssp {
|
|
entry:
|
|
%mul = shl i32 %n, 1
|
|
%cmp1 = icmp eq i32 %mul, 0
|
|
br i1 %cmp1, label %for.end, label %for.body.preheader
|
|
|
|
for.body.preheader: ; preds = %entry
|
|
%0 = zext i32 %mul to i64
|
|
br label %for.body
|
|
|
|
for.body: ; preds = %for.body.preheader, %for.body
|
|
%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
|
|
%arrayidx = getelementptr inbounds i32, i32* %f, i64 %indvars.iv
|
|
store i32 0, i32* %arrayidx, align 4
|
|
%1 = or i64 %indvars.iv, 1
|
|
%arrayidx2 = getelementptr inbounds i32, i32* %f, i64 %1
|
|
store i32 0, i32* %arrayidx2, align 4
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 2
|
|
%cmp = icmp ult i64 %indvars.iv.next, %0
|
|
br i1 %cmp, label %for.body, label %for.end.loopexit
|
|
|
|
for.end.loopexit: ; preds = %for.body
|
|
br label %for.end
|
|
|
|
for.end: ; preds = %for.end.loopexit, %entry
|
|
ret void
|
|
; CHECK-LABEL: @test(
|
|
; CHECK: call void @llvm.memset
|
|
; CHECK-NOT: store
|
|
}
|
|
|
|
;void test_pattern(int *f, unsigned n) {
|
|
; for (unsigned i = 0; i < 2 * n; i += 2) {
|
|
; f[i] = 2;
|
|
; f[i+1] = 2;
|
|
; }
|
|
;}
|
|
define void @test_pattern(i32* %f, i32 %n) nounwind ssp {
|
|
entry:
|
|
%mul = shl i32 %n, 1
|
|
%cmp1 = icmp eq i32 %mul, 0
|
|
br i1 %cmp1, label %for.end, label %for.body.preheader
|
|
|
|
for.body.preheader: ; preds = %entry
|
|
%0 = zext i32 %mul to i64
|
|
br label %for.body
|
|
|
|
for.body: ; preds = %for.body.preheader, %for.body
|
|
%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
|
|
%arrayidx = getelementptr inbounds i32, i32* %f, i64 %indvars.iv
|
|
store i32 2, i32* %arrayidx, align 4
|
|
%1 = or i64 %indvars.iv, 1
|
|
%arrayidx2 = getelementptr inbounds i32, i32* %f, i64 %1
|
|
store i32 2, i32* %arrayidx2, align 4
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 2
|
|
%cmp = icmp ult i64 %indvars.iv.next, %0
|
|
br i1 %cmp, label %for.body, label %for.end.loopexit
|
|
|
|
for.end.loopexit: ; preds = %for.body
|
|
br label %for.end
|
|
|
|
for.end: ; preds = %for.end.loopexit, %entry
|
|
ret void
|
|
; CHECK-LABEL: @test_pattern(
|
|
; CHECK: call void @memset_pattern16
|
|
; CHECK-NOT: store
|
|
}
|