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llvm-project/llvm/test/Transforms/Util/PredicateInfo/testandor.ll
Nikita Popov 353fa4403a [PredicateInfo] Place predicate info after assume 
Place the ssa.copy instructions for assumes after the assume,
instead of before it. Both options are valid, but placing them
afterwards prevents assumes from being replaced with assume(true).
This fixes https://bugs.llvm.org/show_bug.cgi?id=37541 in NewGVN
and will avoid a similar issue in SCCP when we handle more
predicate infos.

Differential Revision: https://reviews.llvm.org/D83631
2020-07-13 21:10:11 +02:00

212 lines
7.4 KiB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -print-predicateinfo -disable-output < %s 2>&1 | FileCheck %s
declare void @foo(i1)
declare void @bar(i32)
declare void @llvm.assume(i1)
define void @testor(i32 %x, i32 %y) {
; CHECK-LABEL: @testor(
; CHECK-NEXT: [[XZ:%.*]] = icmp eq i32 [[X:%.*]], 0
; CHECK-NEXT: [[YZ:%.*]] = icmp eq i32 [[Y:%.*]], 0
; CHECK-NEXT: [[Z:%.*]] = or i1 [[XZ]], [[YZ]]
; CHECK: [[XZ_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[XZ]])
; CHECK: [[X_0:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[X]])
; CHECK: [[YZ_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[YZ]])
; CHECK: [[Y_0:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[Y]])
; CHECK: [[Z_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[Z]])
; CHECK-NEXT: br i1 [[Z]], label [[ONEOF:%.*]], label [[NEITHER:%.*]]
; CHECK: oneof:
; CHECK-NEXT: call void @foo(i1 [[XZ]])
; CHECK-NEXT: call void @foo(i1 [[YZ]])
; CHECK-NEXT: call void @bar(i32 [[X]])
; CHECK-NEXT: call void @bar(i32 [[Y]])
; CHECK-NEXT: ret void
; CHECK: neither:
; CHECK-NEXT: call void @foo(i1 [[XZ_0]])
; CHECK-NEXT: call void @foo(i1 [[YZ_0]])
; CHECK-NEXT: call void @bar(i32 [[X_0]])
; CHECK-NEXT: call void @bar(i32 [[Y_0]])
; CHECK-NEXT: call void @foo(i1 [[Z_0]])
; CHECK-NEXT: ret void
;
%xz = icmp eq i32 %x, 0
%yz = icmp eq i32 %y, 0
%z = or i1 %xz, %yz
br i1 %z, label %oneof, label %neither
oneof:
;; Should not insert on the true edge for or
call void @foo(i1 %xz)
call void @foo(i1 %yz)
call void @bar(i32 %x)
call void @bar(i32 %y)
ret void
neither:
call void @foo(i1 %xz)
call void @foo(i1 %yz)
call void @bar(i32 %x)
call void @bar(i32 %y)
call void @foo(i1 %z)
ret void
}
define void @testand(i32 %x, i32 %y) {
; CHECK-LABEL: @testand(
; CHECK-NEXT: [[XZ:%.*]] = icmp eq i32 [[X:%.*]], 0
; CHECK-NEXT: [[YZ:%.*]] = icmp eq i32 [[Y:%.*]], 0
; CHECK-NEXT: [[Z:%.*]] = and i1 [[XZ]], [[YZ]]
; CHECK: [[XZ_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[XZ]])
; CHECK: [[X_0:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[X]])
; CHECK: [[YZ_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[YZ]])
; CHECK: [[Y_0:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[Y]])
; CHECK: [[Z_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[Z]])
; CHECK-NEXT: br i1 [[Z]], label [[BOTH:%.*]], label [[NOPE:%.*]]
; CHECK: both:
; CHECK-NEXT: call void @foo(i1 [[XZ_0]])
; CHECK-NEXT: call void @foo(i1 [[YZ_0]])
; CHECK-NEXT: call void @bar(i32 [[X_0]])
; CHECK-NEXT: call void @bar(i32 [[Y_0]])
; CHECK-NEXT: ret void
; CHECK: nope:
; CHECK-NEXT: call void @foo(i1 [[XZ]])
; CHECK-NEXT: call void @foo(i1 [[YZ]])
; CHECK-NEXT: call void @bar(i32 [[X]])
; CHECK-NEXT: call void @bar(i32 [[Y]])
; CHECK-NEXT: call void @foo(i1 [[Z_0]])
; CHECK-NEXT: ret void
;
%xz = icmp eq i32 %x, 0
%yz = icmp eq i32 %y, 0
%z = and i1 %xz, %yz
br i1 %z, label %both, label %nope
both:
call void @foo(i1 %xz)
call void @foo(i1 %yz)
call void @bar(i32 %x)
call void @bar(i32 %y)
ret void
nope:
;; Should not insert on the false edge for and
call void @foo(i1 %xz)
call void @foo(i1 %yz)
call void @bar(i32 %x)
call void @bar(i32 %y)
call void @foo(i1 %z)
ret void
}
define void @testandsame(i32 %x, i32 %y) {
; CHECK-LABEL: @testandsame(
; CHECK-NEXT: [[XGT:%.*]] = icmp sgt i32 [[X:%.*]], 0
; CHECK-NEXT: [[XLT:%.*]] = icmp slt i32 [[X]], 100
; CHECK-NEXT: [[Z:%.*]] = and i1 [[XGT]], [[XLT]]
; CHECK: [[XGT_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[XGT]])
; CHECK: [[X_0:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[X]])
; CHECK: [[X_0_1:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[X_0]])
; CHECK: [[XLT_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[XLT]])
; CHECK: [[Z_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[Z]])
; CHECK-NEXT: br i1 [[Z]], label [[BOTH:%.*]], label [[NOPE:%.*]]
; CHECK: both:
; CHECK-NEXT: call void @foo(i1 [[XGT_0]])
; CHECK-NEXT: call void @foo(i1 [[XLT_0]])
; CHECK-NEXT: call void @bar(i32 [[X_0_1]])
; CHECK-NEXT: ret void
; CHECK: nope:
; CHECK-NEXT: call void @foo(i1 [[XGT]])
; CHECK-NEXT: call void @foo(i1 [[XLT]])
; CHECK-NEXT: call void @foo(i1 [[Z_0]])
; CHECK-NEXT: ret void
;
%xgt = icmp sgt i32 %x, 0
%xlt = icmp slt i32 %x, 100
%z = and i1 %xgt, %xlt
br i1 %z, label %both, label %nope
both:
call void @foo(i1 %xgt)
call void @foo(i1 %xlt)
call void @bar(i32 %x)
ret void
nope:
call void @foo(i1 %xgt)
call void @foo(i1 %xlt)
call void @foo(i1 %z)
ret void
}
define void @testandassume(i32 %x, i32 %y) {
; CHECK-LABEL: @testandassume(
; CHECK-NEXT: [[XZ:%.*]] = icmp eq i32 [[X:%.*]], 0
; CHECK-NEXT: [[YZ:%.*]] = icmp eq i32 [[Y:%.*]], 0
; CHECK-NEXT: [[Z:%.*]] = and i1 [[XZ]], [[YZ]]
; CHECK-NEXT: call void @llvm.assume(i1 [[Z]])
; CHECK: [[TMP1:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[Z]])
; CHECK: [[TMP2:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[Y]])
; CHECK: [[TMP3:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[YZ]])
; CHECK: [[TMP4:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[X]])
; CHECK: [[TMP5:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[XZ]])
; CHECK: [[DOT0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[TMP5]])
; CHECK: [[DOT01:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[TMP4]])
; CHECK: [[DOT02:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[TMP3]])
; CHECK: [[DOT03:%.*]] = call i32 @llvm.ssa.copy.{{.+}}(i32 [[TMP2]])
; CHECK: [[DOT04:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[TMP1]])
; CHECK-NEXT: br i1 [[TMP1]], label [[BOTH:%.*]], label [[NOPE:%.*]]
; CHECK: both:
; CHECK-NEXT: call void @foo(i1 [[DOT0]])
; CHECK-NEXT: call void @foo(i1 [[DOT02]])
; CHECK-NEXT: call void @bar(i32 [[DOT01]])
; CHECK-NEXT: call void @bar(i32 [[DOT03]])
; CHECK-NEXT: ret void
; CHECK: nope:
; CHECK-NEXT: call void @foo(i1 [[DOT04]])
; CHECK-NEXT: ret void
;
%xz = icmp eq i32 %x, 0
%yz = icmp eq i32 %y, 0
%z = and i1 %xz, %yz
call void @llvm.assume(i1 %z)
br i1 %z, label %both, label %nope
both:
call void @foo(i1 %xz)
call void @foo(i1 %yz)
call void @bar(i32 %x)
call void @bar(i32 %y)
ret void
nope:
call void @foo(i1 %z)
ret void
}
;; Unlike and/or for branches, assume is *always* true, so we only match and for it
define void @testorassume(i32 %x, i32 %y) {
;
; CHECK-LABEL: @testorassume(
; CHECK-NEXT: [[XZ:%.*]] = icmp eq i32 [[X:%.*]], 0
; CHECK-NEXT: [[YZ:%.*]] = icmp eq i32 [[Y:%.*]], 0
; CHECK-NEXT: [[Z:%.*]] = or i1 [[XZ]], [[YZ]]
; CHECK-NEXT: call void @llvm.assume(i1 [[Z]])
; CHECK: [[Z_0:%.*]] = call i1 @llvm.ssa.copy.{{.+}}(i1 [[Z]])
; CHECK-NEXT: br i1 [[Z]], label [[BOTH:%.*]], label [[NOPE:%.*]]
; CHECK: both:
; CHECK-NEXT: call void @foo(i1 [[XZ]])
; CHECK-NEXT: call void @foo(i1 [[YZ]])
; CHECK-NEXT: call void @bar(i32 [[X]])
; CHECK-NEXT: call void @bar(i32 [[Y]])
; CHECK-NEXT: ret void
; CHECK: nope:
; CHECK-NEXT: call void @foo(i1 [[Z_0]])
; CHECK-NEXT: ret void
;
%xz = icmp eq i32 %x, 0
%yz = icmp eq i32 %y, 0
%z = or i1 %xz, %yz
call void @llvm.assume(i1 %z)
br i1 %z, label %both, label %nope
both:
call void @foo(i1 %xz)
call void @foo(i1 %yz)
call void @bar(i32 %x)
call void @bar(i32 %y)
ret void
nope:
call void @foo(i1 %z)
ret void
}
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