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-rw-r--r--llvm/test/Transforms/ConstraintElimination/wrapping-math.ll202
1 files changed, 201 insertions, 1 deletions
diff --git a/llvm/test/Transforms/ConstraintElimination/wrapping-math.ll b/llvm/test/Transforms/ConstraintElimination/wrapping-math.ll
index 5fd7bad1bdbb..9e745a8f67b6 100644
--- a/llvm/test/Transforms/ConstraintElimination/wrapping-math.ll
+++ b/llvm/test/Transforms/ConstraintElimination/wrapping-math.ll
@@ -22,7 +22,7 @@ define i1 @wrapping_add_known_1(i8 %a) {
; CHECK: then:
; CHECK-NEXT: [[SUB_1:%.*]] = add i8 [[A]], -1
; CHECK-NEXT: [[C_1:%.*]] = icmp eq i8 [[SUB_1]], 0
-; CHECK-NEXT: ret i1 [[C_1]]
+; CHECK-NEXT: ret i1 true
; CHECK: else:
; CHECK-NEXT: [[SUB_2:%.*]] = add i8 [[A]], -1
; CHECK-NEXT: [[C_2:%.*]] = icmp eq i8 [[SUB_2]], 0
@@ -71,3 +71,203 @@ else:
%c.2 = icmp eq i8 %sub.2, 0
ret i1 %c.2
}
+
+; Test from https://github.com/llvm/llvm-project/issues/48253.
+define i1 @test_48253_eq_ne(i8 %a, i8 %b) {
+; CHECK-LABEL: @test_48253_eq_ne(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[CMP_1:%.*]] = icmp ne i8 [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT: [[CMP_2:%.*]] = icmp eq i8 [[B]], 0
+; CHECK-NEXT: [[OR:%.*]] = or i1 [[CMP_1]], [[CMP_2]]
+; CHECK-NEXT: br i1 [[OR]], label [[EXIT_1:%.*]], label [[IF_END:%.*]]
+; CHECK: if.end:
+; CHECK-NEXT: [[SUB_1:%.*]] = add i8 [[B]], -1
+; CHECK-NEXT: [[T_1:%.*]] = icmp ult i8 [[SUB_1]], [[A]]
+; CHECK-NEXT: [[SUB_2:%.*]] = add i8 [[B]], -2
+; CHECK-NEXT: [[C_2:%.*]] = icmp ult i8 [[SUB_2]], [[A]]
+; CHECK-NEXT: [[XOR_1:%.*]] = xor i1 true, [[C_2]]
+; CHECK-NEXT: ret i1 [[XOR_1]]
+; CHECK: exit.1:
+; CHECK-NEXT: [[SUB_3:%.*]] = add i8 [[B]], -1
+; CHECK-NEXT: [[C_3:%.*]] = icmp ult i8 [[SUB_3]], [[A]]
+; CHECK-NEXT: [[SUB_4:%.*]] = add i8 [[B]], -2
+; CHECK-NEXT: [[C_4:%.*]] = icmp ult i8 [[SUB_4]], [[A]]
+; CHECK-NEXT: [[XOR_2:%.*]] = xor i1 [[C_3]], [[C_4]]
+; CHECK-NEXT: ret i1 [[XOR_2]]
+;
+entry:
+ %cmp.1 = icmp ne i8 %a, %b
+ %cmp.2 = icmp eq i8 %b, 0
+ %or = or i1 %cmp.1, %cmp.2
+ br i1 %or, label %exit.1, label %if.end
+
+if.end:
+ %sub.1 = add i8 %b, -1
+ %t.1 = icmp ult i8 %sub.1, %a
+ %sub.2 = add i8 %b, -2
+ %c.2 = icmp ult i8 %sub.2, %a
+ %xor.1 = xor i1 %t.1, %c.2
+ ret i1 %xor.1
+
+exit.1:
+ %sub.3 = add i8 %b, -1
+ %c.3 = icmp ult i8 %sub.3, %a
+ %sub.4 = add i8 %b, -2
+ %c.4 = icmp ult i8 %sub.4, %a
+ %xor.2 = xor i1 %c.3, %c.4
+ ret i1 %xor.2
+}
+
+define i1 @test_ult(i8 %a, i8 %b) {
+; CHECK-LABEL: @test_ult(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[CMP_1:%.*]] = icmp uge i8 [[A:%.*]], 20
+; CHECK-NEXT: [[CMP_2:%.*]] = icmp ult i8 [[A]], [[B:%.*]]
+; CHECK-NEXT: [[AND:%.*]] = and i1 [[CMP_1]], [[CMP_2]]
+; CHECK-NEXT: [[SUB_1:%.*]] = add i8 [[A]], -1
+; CHECK-NEXT: [[SUB_2:%.*]] = add i8 [[A]], -2
+; CHECK-NEXT: [[SUB_3:%.*]] = add i8 [[A]], -20
+; CHECK-NEXT: [[SUB_4:%.*]] = add i8 [[A]], 21
+; CHECK-NEXT: [[ADD_1:%.*]] = add i8 [[A]], 1
+; CHECK-NEXT: br i1 [[AND]], label [[IF_END:%.*]], label [[EXIT_1:%.*]]
+; CHECK: if.end:
+; CHECK-NEXT: [[T_1:%.*]] = icmp ult i8 [[SUB_1]], [[B]]
+; CHECK-NEXT: [[T_2:%.*]] = icmp ult i8 [[SUB_2]], [[B]]
+; CHECK-NEXT: [[XOR_1:%.*]] = xor i1 true, true
+; CHECK-NEXT: [[T_3:%.*]] = icmp ult i8 [[SUB_3]], [[B]]
+; CHECK-NEXT: [[XOR_2:%.*]] = xor i1 [[XOR_1]], true
+; CHECK-NEXT: [[C_1:%.*]] = icmp ult i8 [[SUB_4]], [[B]]
+; CHECK-NEXT: [[XOR_3:%.*]] = xor i1 [[XOR_2]], [[C_1]]
+; CHECK-NEXT: [[C_2:%.*]] = icmp ult i8 [[ADD_1]], [[B]]
+; CHECK-NEXT: [[XOR_4:%.*]] = xor i1 [[XOR_3]], [[C_2]]
+; CHECK-NEXT: ret i1 [[XOR_4]]
+; CHECK: exit.1:
+; CHECK-NEXT: [[C_3:%.*]] = icmp ult i8 [[SUB_1]], [[B]]
+; CHECK-NEXT: [[C_4:%.*]] = icmp ult i8 [[SUB_2]], [[B]]
+; CHECK-NEXT: [[XOR_5:%.*]] = xor i1 [[C_3]], [[C_4]]
+; CHECK-NEXT: [[C_5:%.*]] = icmp ult i8 [[SUB_3]], [[B]]
+; CHECK-NEXT: [[XOR_6:%.*]] = xor i1 [[XOR_5]], [[C_5]]
+; CHECK-NEXT: [[C_6:%.*]] = icmp ult i8 [[SUB_4]], [[B]]
+; CHECK-NEXT: [[XOR_7:%.*]] = xor i1 [[XOR_6]], [[C_6]]
+; CHECK-NEXT: [[C_7:%.*]] = icmp ult i8 [[ADD_1]], [[B]]
+; CHECK-NEXT: [[XOR_8:%.*]] = xor i1 [[XOR_7]], [[C_7]]
+; CHECK-NEXT: ret i1 [[XOR_8]]
+;
+entry:
+ %cmp.1 = icmp uge i8 %a, 20
+ %cmp.2 = icmp ult i8 %a, %b
+ %and = and i1 %cmp.1, %cmp.2
+ %sub.1 = add i8 %a, -1
+ %sub.2 = add i8 %a, -2
+ %sub.3 = add i8 %a, -20
+ %sub.4 = add i8 %a, 21
+ %add.1 = add i8 %a, 1
+ br i1 %and, label %if.end, label %exit.1
+
+if.end:
+ %t.1 = icmp ult i8 %sub.1, %b
+ %t.2 = icmp ult i8 %sub.2, %b
+ %xor.1 = xor i1 %t.1, %t.2
+
+ %t.3 = icmp ult i8 %sub.3, %b
+ %xor.2 = xor i1 %xor.1, %t.3
+
+ %c.1 = icmp ult i8 %sub.4, %b
+ %xor.3 = xor i1 %xor.2, %c.1
+
+ %c.2 = icmp ult i8 %add.1, %b
+ %xor.4 = xor i1 %xor.3, %c.2
+ ret i1 %xor.4
+
+exit.1:
+ %c.3 = icmp ult i8 %sub.1, %b
+ %c.4 = icmp ult i8 %sub.2, %b
+ %xor.5 = xor i1 %c.3, %c.4
+
+ %c.5 = icmp ult i8 %sub.3, %b
+ %xor.6 = xor i1 %xor.5, %c.5
+
+ %c.6 = icmp ult i8 %sub.4, %b
+ %xor.7 = xor i1 %xor.6, %c.6
+
+ %c.7 = icmp ult i8 %add.1, %b
+ %xor.8 = xor i1 %xor.7, %c.7
+ ret i1 %xor.8
+}
+
+define i1 @test_slt(i8 %a, i8 %b) {
+; CHECK-LABEL: @test_slt(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[CMP_1:%.*]] = icmp sge i8 [[A:%.*]], 20
+; CHECK-NEXT: [[CMP_2:%.*]] = icmp slt i8 [[A]], [[B:%.*]]
+; CHECK-NEXT: [[AND:%.*]] = and i1 [[CMP_1]], [[CMP_2]]
+; CHECK-NEXT: [[SUB_1:%.*]] = add i8 [[A]], -1
+; CHECK-NEXT: [[SUB_2:%.*]] = add i8 [[A]], -2
+; CHECK-NEXT: [[SUB_3:%.*]] = add i8 [[A]], -20
+; CHECK-NEXT: [[SUB_4:%.*]] = add i8 [[A]], 21
+; CHECK-NEXT: [[ADD_1:%.*]] = add i8 [[A]], 1
+; CHECK-NEXT: br i1 [[AND]], label [[IF_END:%.*]], label [[EXIT_1:%.*]]
+; CHECK: if.end:
+; CHECK-NEXT: [[T_1:%.*]] = icmp slt i8 [[SUB_1]], [[B]]
+; CHECK-NEXT: [[T_2:%.*]] = icmp slt i8 [[SUB_2]], [[B]]
+; CHECK-NEXT: [[XOR_1:%.*]] = xor i1 [[T_1]], [[T_2]]
+; CHECK-NEXT: [[T_3:%.*]] = icmp slt i8 [[SUB_3]], [[B]]
+; CHECK-NEXT: [[XOR_2:%.*]] = xor i1 [[XOR_1]], [[T_3]]
+; CHECK-NEXT: [[C_1:%.*]] = icmp slt i8 [[SUB_4]], [[B]]
+; CHECK-NEXT: [[XOR_3:%.*]] = xor i1 [[XOR_2]], [[C_1]]
+; CHECK-NEXT: [[C_2:%.*]] = icmp slt i8 [[ADD_1]], [[B]]
+; CHECK-NEXT: [[XOR_4:%.*]] = xor i1 [[XOR_3]], [[C_2]]
+; CHECK-NEXT: ret i1 [[XOR_4]]
+; CHECK: exit.1:
+; CHECK-NEXT: [[C_3:%.*]] = icmp slt i8 [[SUB_1]], [[B]]
+; CHECK-NEXT: [[C_4:%.*]] = icmp slt i8 [[SUB_2]], [[B]]
+; CHECK-NEXT: [[XOR_5:%.*]] = xor i1 [[C_3]], [[C_4]]
+; CHECK-NEXT: [[C_5:%.*]] = icmp slt i8 [[SUB_3]], [[B]]
+; CHECK-NEXT: [[XOR_6:%.*]] = xor i1 [[XOR_5]], [[C_5]]
+; CHECK-NEXT: [[C_6:%.*]] = icmp slt i8 [[SUB_4]], [[B]]
+; CHECK-NEXT: [[XOR_7:%.*]] = xor i1 [[XOR_6]], [[C_6]]
+; CHECK-NEXT: [[C_7:%.*]] = icmp slt i8 [[ADD_1]], [[B]]
+; CHECK-NEXT: [[XOR_8:%.*]] = xor i1 [[XOR_7]], [[C_7]]
+; CHECK-NEXT: ret i1 [[XOR_8]]
+;
+entry:
+ %cmp.1 = icmp sge i8 %a, 20
+ %cmp.2 = icmp slt i8 %a, %b
+ %and = and i1 %cmp.1, %cmp.2
+ %sub.1 = add i8 %a, -1
+ %sub.2 = add i8 %a, -2
+ %sub.3 = add i8 %a, -20
+ %sub.4 = add i8 %a, 21
+ %add.1 = add i8 %a, 1
+ br i1 %and, label %if.end, label %exit.1
+
+if.end:
+ %t.1 = icmp slt i8 %sub.1, %b
+ %t.2 = icmp slt i8 %sub.2, %b
+ %xor.1 = xor i1 %t.1, %t.2
+
+ %t.3 = icmp slt i8 %sub.3, %b
+ %xor.2 = xor i1 %xor.1, %t.3
+
+ %c.1 = icmp slt i8 %sub.4, %b
+ %xor.3 = xor i1 %xor.2, %c.1
+
+ %c.2 = icmp slt i8 %add.1, %b
+ %xor.4 = xor i1 %xor.3, %c.2
+ ret i1 %xor.4
+
+exit.1:
+ %c.3 = icmp slt i8 %sub.1, %b
+ %c.4 = icmp slt i8 %sub.2, %b
+ %xor.5 = xor i1 %c.3, %c.4
+
+ %c.5 = icmp slt i8 %sub.3, %b
+ %xor.6 = xor i1 %xor.5, %c.5
+
+ %c.6 = icmp slt i8 %sub.4, %b
+ %xor.7 = xor i1 %xor.6, %c.6
+
+ %c.7 = icmp slt i8 %add.1, %b
+ %xor.8 = xor i1 %xor.7, %c.7
+ ret i1 %xor.8
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-16 12:12:22 +0000