forked from OSchip/llvm-project
129 lines
5.0 KiB
LLVM
129 lines
5.0 KiB
LLVM
; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
|
|
|
|
declare { i16, i1 } @llvm.sadd.with.overflow.i16(i16, i16) nounwind readnone
|
|
declare { i16, i1 } @llvm.uadd.with.overflow.i16(i16, i16) nounwind readnone
|
|
declare { i16, i1 } @llvm.ssub.with.overflow.i16(i16, i16) nounwind readnone
|
|
declare { i16, i1 } @llvm.usub.with.overflow.i16(i16, i16) nounwind readnone
|
|
declare { i16, i1 } @llvm.smul.with.overflow.i16(i16, i16) nounwind readnone
|
|
declare { i16, i1 } @llvm.umul.with.overflow.i16(i16, i16) nounwind readnone
|
|
|
|
; CHECK-LABEL: Classifying expressions for: @uadd_exhaustive
|
|
; CHECK: Loop %for.body: backedge-taken count is 35
|
|
define void @uadd_exhaustive() {
|
|
entry:
|
|
br i1 undef, 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 i16 [ %math, %for.body ], [ 65500, %for.body.preheader ]
|
|
%0 = call { i16, i1 } @llvm.uadd.with.overflow.i16(i16 %indvars.iv, i16 1)
|
|
%math = extractvalue { i16, i1 } %0, 0
|
|
%ov = extractvalue { i16, i1 } %0, 1
|
|
br i1 %ov, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: Classifying expressions for: @sadd_exhaustive
|
|
; CHECK: Loop %for.body: backedge-taken count is 67
|
|
define void @sadd_exhaustive() {
|
|
entry:
|
|
br i1 undef, 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 i16 [ %math, %for.body ], [ 32700, %for.body.preheader ]
|
|
%0 = call { i16, i1 } @llvm.sadd.with.overflow.i16(i16 %indvars.iv, i16 1)
|
|
%math = extractvalue { i16, i1 } %0, 0
|
|
%ov = extractvalue { i16, i1 } %0, 1
|
|
br i1 %ov, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: Classifying expressions for: @usub_exhaustive
|
|
; CHECK: Loop %for.body: backedge-taken count is 50
|
|
define void @usub_exhaustive() {
|
|
entry:
|
|
br i1 undef, 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 i16 [ %math, %for.body ], [ 50, %for.body.preheader ]
|
|
%0 = call { i16, i1 } @llvm.usub.with.overflow.i16(i16 %indvars.iv, i16 1)
|
|
%math = extractvalue { i16, i1 } %0, 0
|
|
%ov = extractvalue { i16, i1 } %0, 1
|
|
br i1 %ov, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: Classifying expressions for: @ssub_exhaustive
|
|
; CHECK: Loop %for.body: backedge-taken count is 68
|
|
define void @ssub_exhaustive() {
|
|
entry:
|
|
br i1 undef, 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 i16 [ %math, %for.body ], [ -32700, %for.body.preheader ]
|
|
%0 = call { i16, i1 } @llvm.ssub.with.overflow.i16(i16 %indvars.iv, i16 1)
|
|
%math = extractvalue { i16, i1 } %0, 0
|
|
%ov = extractvalue { i16, i1 } %0, 1
|
|
br i1 %ov, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: Classifying expressions for: @smul_exhaustive
|
|
; CHECK: Loop %for.body: backedge-taken count is 14
|
|
define void @smul_exhaustive() {
|
|
entry:
|
|
br i1 undef, 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 i16 [ %math, %for.body ], [ 1, %for.body.preheader ]
|
|
%0 = call { i16, i1 } @llvm.smul.with.overflow.i16(i16 %indvars.iv, i16 2)
|
|
%math = extractvalue { i16, i1 } %0, 0
|
|
%ov = extractvalue { i16, i1 } %0, 1
|
|
br i1 %ov, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: Classifying expressions for: @umul_exhaustive
|
|
; CHECK: Loop %for.body: backedge-taken count is 15
|
|
define void @umul_exhaustive() {
|
|
entry:
|
|
br i1 undef, 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 i16 [ %math, %for.body ], [ 1, %for.body.preheader ]
|
|
%0 = call { i16, i1 } @llvm.umul.with.overflow.i16(i16 %indvars.iv, i16 2)
|
|
%math = extractvalue { i16, i1 } %0, 0
|
|
%ov = extractvalue { i16, i1 } %0, 1
|
|
br i1 %ov, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
ret void
|
|
}
|