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TheRock/compiler/amd-llvm/llvm/test/Transforms/Util/PredicateInfo/diamond.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

73 lines
2.9 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-inst-comments
; RUN: opt -passes='print<predicate-info>' -disable-output < %s 2>&1 | FileCheck %s
define i1 @f(i32 %x, i1 %y) {
; CHECK-LABEL: @f(
; CHECK-NEXT: br i1 [[Y:%.*]], label [[BB0:%.*]], label [[BB1:%.*]]
; CHECK: bb0:
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[X:%.*]], 0
; CHECK-NEXT: ; branch predicate info { TrueEdge: 1 Comparison: [[CMP]] = icmp sge i32 [[X]], 0 Edge: [label [[BB0]],label [[BB2:%.*]]], RenamedOp: [[X]] }
; CHECK-NEXT: [[X_0:%.*]] = bitcast i32 [[X]] to i32
; CHECK-NEXT: br i1 [[CMP]], label [[BB2]], label [[BB3:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[X2:%.*]] = add nuw nsw i32 [[X]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp sge i32 [[X2]], 2
; CHECK-NEXT: ; branch predicate info { TrueEdge: 1 Comparison: [[CMP2]] = icmp sge i32 [[X2]], 2 Edge: [label [[BB1]],label [[BB2]]], RenamedOp: [[X2]] }
; CHECK-NEXT: [[X2_0:%.*]] = bitcast i32 [[X2]] to i32
; CHECK-NEXT: br i1 [[CMP2]], label [[BB2]], label [[BB3]]
; CHECK: bb2:
; CHECK-NEXT: [[X3:%.*]] = phi i32 [ [[X_0]], [[BB0]] ], [ [[X2_0]], [[BB1]] ]
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret i1 false
;
br i1 %y, label %bb0, label %bb1
bb0:
%cmp = icmp sge i32 %x, 0 ; x > 0
br i1 %cmp, label %bb2, label %bb3
bb1:
%x2 = add nsw nuw i32 %x, 1
%cmp2 = icmp sge i32 %x2, 2 ; x+1 > 2 / x > 1
br i1 %cmp2, label %bb2, label %bb3
bb2:
%x3 = phi i32 [ %x, %bb0 ], [ %x2, %bb1 ]
br label %bb3
bb3:
ret i1 0
}
define i1 @g(i32 %x, i1 %y) {
; CHECK-LABEL: @g(
; CHECK-NEXT: br i1 [[Y:%.*]], label [[BB0:%.*]], label [[BB1:%.*]]
; CHECK: bb0:
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[X:%.*]], 0
; CHECK-NEXT: ; branch predicate info { TrueEdge: 0 Comparison: [[CMP]] = icmp sge i32 [[X]], 0 Edge: [label [[BB0]],label [[BB2:%.*]]], RenamedOp: [[X]] }
; CHECK-NEXT: [[X_0:%.*]] = bitcast i32 [[X]] to i32
; CHECK-NEXT: br i1 [[CMP]], label [[BB3:%.*]], label [[BB2]]
; CHECK: bb1:
; CHECK-NEXT: [[X2:%.*]] = add nuw nsw i32 [[X]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp sge i32 [[X2]], 2
; CHECK-NEXT: ; branch predicate info { TrueEdge: 0 Comparison: [[CMP2]] = icmp sge i32 [[X2]], 2 Edge: [label [[BB1]],label [[BB2]]], RenamedOp: [[X2]] }
; CHECK-NEXT: [[X2_0:%.*]] = bitcast i32 [[X2]] to i32
; CHECK-NEXT: br i1 [[CMP2]], label [[BB3]], label [[BB2]]
; CHECK: bb2:
; CHECK-NEXT: [[X3:%.*]] = phi i32 [ [[X_0]], [[BB0]] ], [ [[X2_0]], [[BB1]] ]
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret i1 false
;
br i1 %y, label %bb0, label %bb1
bb0:
%cmp = icmp sge i32 %x, 0 ; x > 0
br i1 %cmp, label %bb3, label %bb2
bb1:
%x2 = add nsw nuw i32 %x, 1
%cmp2 = icmp sge i32 %x2, 2 ; x+1 > 2 / x > 1
br i1 %cmp2, label %bb3, label %bb2
bb2:
%x3 = phi i32 [ %x, %bb0 ], [ %x2, %bb1 ]
br label %bb3
bb3:
ret i1 0
}