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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -passes=correlated-propagation -S | FileCheck %s
target datalayout = "p:32:32"
define i32 @infer_range_from_dom_equality(i32 %x, i32 %y) {
; CHECK-LABEL: define range(i32 1, 0) i32 @infer_range_from_dom_equality(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[X]], [[Y]]
; CHECK-NEXT: [[SUB:%.*]] = sub i32 [[X]], [[Y]]
; CHECK-NEXT: br i1 [[COND]], label %[[IF_THEN:.*]], label %[[IF_ELSE:.*]]
; CHECK: [[IF_THEN]]:
; CHECK-NEXT: ret i32 1
; CHECK: [[IF_ELSE]]:
; CHECK-NEXT: ret i32 [[SUB]]
;
entry:
%cond = icmp eq i32 %x, %y
%sub = sub i32 %x, %y
br i1 %cond, label %if.then, label %if.else
if.then:
%max1 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max1
if.else:
%max2 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max2
}
define i32 @infer_range_from_dom_equality_commuted1(i32 %x, i32 %y) {
; CHECK-LABEL: define range(i32 1, 0) i32 @infer_range_from_dom_equality_commuted1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[X]], [[Y]]
; CHECK-NEXT: [[SUB:%.*]] = sub i32 [[Y]], [[X]]
; CHECK-NEXT: br i1 [[COND]], label %[[IF_THEN:.*]], label %[[IF_ELSE:.*]]
; CHECK: [[IF_THEN]]:
; CHECK-NEXT: ret i32 1
; CHECK: [[IF_ELSE]]:
; CHECK-NEXT: ret i32 [[SUB]]
;
entry:
%cond = icmp eq i32 %x, %y
%sub = sub i32 %y, %x
br i1 %cond, label %if.then, label %if.else
if.then:
%max1 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max1
if.else:
%max2 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max2
}
define i32 @infer_range_from_dom_equality_commuted2(i32 %x, i32 %y) {
; CHECK-LABEL: define range(i32 1, 0) i32 @infer_range_from_dom_equality_commuted2(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[Y]], [[X]]
; CHECK-NEXT: [[SUB:%.*]] = sub i32 [[X]], [[Y]]
; CHECK-NEXT: br i1 [[COND]], label %[[IF_THEN:.*]], label %[[IF_ELSE:.*]]
; CHECK: [[IF_THEN]]:
; CHECK-NEXT: ret i32 1
; CHECK: [[IF_ELSE]]:
; CHECK-NEXT: ret i32 [[SUB]]
;
entry:
%cond = icmp eq i32 %y, %x
%sub = sub i32 %x, %y
br i1 %cond, label %if.then, label %if.else
if.then:
%max1 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max1
if.else:
%max2 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max2
}
define i32 @infer_range_from_dom_equality_ptrdiff(ptr %x, ptr %y) {
; CHECK-LABEL: define range(i32 1, 0) i32 @infer_range_from_dom_equality_ptrdiff(
; CHECK-SAME: ptr [[X:%.*]], ptr [[Y:%.*]]) {
; CHECK-NEXT: [[COND:%.*]] = icmp eq ptr [[X]], [[Y]]
; CHECK-NEXT: [[XI:%.*]] = ptrtoint ptr [[X]] to i32
; CHECK-NEXT: [[YI:%.*]] = ptrtoint ptr [[Y]] to i32
; CHECK-NEXT: [[SUB:%.*]] = sub i32 [[XI]], [[YI]]
; CHECK-NEXT: br i1 [[COND]], label %[[IF_THEN:.*]], label %[[IF_ELSE:.*]]
; CHECK: [[IF_THEN]]:
; CHECK-NEXT: ret i32 1
; CHECK: [[IF_ELSE]]:
; CHECK-NEXT: ret i32 [[SUB]]
;
%cond = icmp eq ptr %x, %y
%xi = ptrtoint ptr %x to i32
%yi = ptrtoint ptr %y to i32
%sub = sub i32 %xi, %yi
br i1 %cond, label %if.then, label %if.else
if.then:
%max1 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max1
if.else:
%max2 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max2
}
; Negative tests
define i32 @infer_range_from_dom_slt(i32 %x, i32 %y) {
; CHECK-LABEL: define range(i32 1, 0) i32 @infer_range_from_dom_slt(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[COND:%.*]] = icmp slt i32 [[X]], [[Y]]
; CHECK-NEXT: [[SUB:%.*]] = sub i32 [[X]], [[Y]]
; CHECK-NEXT: br i1 [[COND]], label %[[IF_THEN:.*]], label %[[IF_ELSE:.*]]
; CHECK: [[IF_THEN]]:
; CHECK-NEXT: [[MAX1:%.*]] = call i32 @llvm.umax.i32(i32 [[SUB]], i32 1)
; CHECK-NEXT: ret i32 [[MAX1]]
; CHECK: [[IF_ELSE]]:
; CHECK-NEXT: [[MAX2:%.*]] = call i32 @llvm.umax.i32(i32 [[SUB]], i32 1)
; CHECK-NEXT: ret i32 [[MAX2]]
;
entry:
%cond = icmp slt i32 %x, %y
%sub = sub i32 %x, %y
br i1 %cond, label %if.then, label %if.else
if.then:
%max1 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max1
if.else:
%max2 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max2
}
define i32 @infer_range_from_dom_equality_not_match(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: define range(i32 1, 0) i32 @infer_range_from_dom_equality_not_match(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]], i32 [[Z:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[X]], [[Z]]
; CHECK-NEXT: [[SUB:%.*]] = sub i32 [[X]], [[Y]]
; CHECK-NEXT: br i1 [[COND]], label %[[IF_THEN:.*]], label %[[IF_ELSE:.*]]
; CHECK: [[IF_THEN]]:
; CHECK-NEXT: [[MAX1:%.*]] = call i32 @llvm.umax.i32(i32 [[SUB]], i32 1)
; CHECK-NEXT: ret i32 [[MAX1]]
; CHECK: [[IF_ELSE]]:
; CHECK-NEXT: [[MAX2:%.*]] = call i32 @llvm.umax.i32(i32 [[SUB]], i32 1)
; CHECK-NEXT: ret i32 [[MAX2]]
;
entry:
%cond = icmp eq i32 %x, %z
%sub = sub i32 %x, %y
br i1 %cond, label %if.then, label %if.else
if.then:
%max1 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max1
if.else:
%max2 = call i32 @llvm.umax.i32(i32 %sub, i32 1)
ret i32 %max2
}
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