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|
; RUN: opt -basic-aa -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"
target triple = "x86_64-apple-darwin10.0.0"
%struct.foo = type { i32, i32 }
%struct.foo1 = type { i32, i32, i32 }
%struct.foo2 = type { i32, i16, i16 }
;void bar1(foo_t *f, unsigned n) {
; for (unsigned i = 0; i < n; ++i) {
; f[i].a = 0;
; f[i].b = 0;
; }
;}
define void @bar1(%struct.foo* %f, i32 %n) nounwind ssp {
entry:
%cmp1 = icmp eq i32 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
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 ]
%a = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 0
store i32 0, i32* %a, align 4
%b = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 1
store i32 0, i32* %b, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp ne i32 %lftr.wideiv, %n
br i1 %exitcond, 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: @bar1(
; CHECK: call void @llvm.memset
; CHECK-NOT: store
}
;void bar2(foo_t *f, unsigned n) {
; for (unsigned i = 0; i < n; ++i) {
; f[i].b = 0;
; f[i].a = 0;
; }
;}
define void @bar2(%struct.foo* %f, i32 %n) nounwind ssp {
entry:
%cmp1 = icmp eq i32 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
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 ]
%b = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 1
store i32 0, i32* %b, align 4
%a = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 0
store i32 0, i32* %a, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp ne i32 %lftr.wideiv, %n
br i1 %exitcond, 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: @bar2(
; CHECK: call void @llvm.memset
; CHECK-NOT: store
}
;void bar3(foo_t *f, unsigned n) {
; for (unsigned i = n; i > 0; --i) {
; f[i].a = 0;
; f[i].b = 0;
; }
;}
define void @bar3(%struct.foo* nocapture %f, i32 %n) nounwind ssp {
entry:
%cmp1 = icmp eq i32 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
%0 = zext i32 %n 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 ]
%a = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 0
store i32 0, i32* %a, align 4
%b = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 1
store i32 0, i32* %b, align 4
%1 = trunc i64 %indvars.iv to i32
%dec = add i32 %1, -1
%cmp = icmp eq i32 %dec, 0
%indvars.iv.next = add nsw i64 %indvars.iv, -1
br i1 %cmp, label %for.end.loopexit, label %for.body
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
; CHECK-LABEL: @bar3(
; CHECK: call void @llvm.memset
; CHECK-NOT: store
}
;void bar4(foo_t *f, unsigned n) {
; for (unsigned i = 0; i < n; ++i) {
; f[i].a = 0;
; f[i].b = 1;
; }
;}
define void @bar4(%struct.foo* nocapture %f, i32 %n) nounwind ssp {
entry:
%cmp1 = icmp eq i32 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
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 ]
%a = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 0
store i32 0, i32* %a, align 4
%b = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 1
store i32 1, i32* %b, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp ne i32 %lftr.wideiv, %n
br i1 %exitcond, 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: @bar4(
; CHECK-NOT: call void @llvm.memset
}
;void bar5(foo1_t *f, unsigned n) {
; for (unsigned i = 0; i < n; ++i) {
; f[i].a = 0;
; f[i].b = 0;
; }
;}
define void @bar5(%struct.foo1* nocapture %f, i32 %n) nounwind ssp {
entry:
%cmp1 = icmp eq i32 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
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 ]
%a = getelementptr inbounds %struct.foo1, %struct.foo1* %f, i64 %indvars.iv, i32 0
store i32 0, i32* %a, align 4
%b = getelementptr inbounds %struct.foo1, %struct.foo1* %f, i64 %indvars.iv, i32 1
store i32 0, i32* %b, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp ne i32 %lftr.wideiv, %n
br i1 %exitcond, 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: @bar5(
; CHECK-NOT: call void @llvm.memset
}
;void bar6(foo2_t *f, unsigned n) {
; for (unsigned i = 0; i < n; ++i) {
; f[i].a = 0;
; f[i].b = 0;
; f[i].c = 0;
; }
;}
define void @bar6(%struct.foo2* nocapture %f, i32 %n) nounwind ssp {
entry:
%cmp1 = icmp eq i32 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
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 ]
%a = getelementptr inbounds %struct.foo2, %struct.foo2* %f, i64 %indvars.iv, i32 0
store i32 0, i32* %a, align 4
%b = getelementptr inbounds %struct.foo2, %struct.foo2* %f, i64 %indvars.iv, i32 1
store i16 0, i16* %b, align 4
%c = getelementptr inbounds %struct.foo2, %struct.foo2* %f, i64 %indvars.iv, i32 2
store i16 0, i16* %c, align 2
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp ne i32 %lftr.wideiv, %n
br i1 %exitcond, 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: @bar6(
; CHECK: call void @llvm.memset
; CHECK-NOT: store
}
|
