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-rw-r--r--llvm/test/Transforms/CorrelatedValuePropagation/min-max.ll136
1 files changed, 128 insertions, 8 deletions
diff --git a/llvm/test/Transforms/CorrelatedValuePropagation/min-max.ll b/llvm/test/Transforms/CorrelatedValuePropagation/min-max.ll
index 705b6e9..c9ee233 100644
--- a/llvm/test/Transforms/CorrelatedValuePropagation/min-max.ll
+++ b/llvm/test/Transforms/CorrelatedValuePropagation/min-max.ll
@@ -71,7 +71,6 @@ define i8 @test6(i8 %x) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: [[LIM:%.*]] = icmp uge i8 [[X:%.*]], 42
; CHECK-NEXT: call void @llvm.assume(i1 [[LIM]])
-; CHECK-NEXT: [[R:%.*]] = call i8 @llvm.umin.i8(i8 [[X]], i8 42)
; CHECK-NEXT: ret i8 42
;
%lim = icmp uge i8 %x, 42
@@ -119,7 +118,6 @@ define i8 @test10(i8 %x) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: [[LIM:%.*]] = icmp ule i8 [[X:%.*]], 42
; CHECK-NEXT: call void @llvm.assume(i1 [[LIM]])
-; CHECK-NEXT: [[R:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 42)
; CHECK-NEXT: ret i8 42
;
%lim = icmp ule i8 %x, 42
@@ -167,7 +165,6 @@ define i8 @test14(i8 %x) {
; CHECK-LABEL: @test14(
; CHECK-NEXT: [[LIM:%.*]] = icmp sge i8 [[X:%.*]], 42
; CHECK-NEXT: call void @llvm.assume(i1 [[LIM]])
-; CHECK-NEXT: [[R:%.*]] = call i8 @llvm.smin.i8(i8 [[X]], i8 42)
; CHECK-NEXT: ret i8 42
;
%lim = icmp sge i8 %x, 42
@@ -179,8 +176,8 @@ define i8 @test15(i8 %x) {
; CHECK-LABEL: @test15(
; CHECK-NEXT: [[LIM:%.*]] = icmp sge i8 [[X:%.*]], 41
; CHECK-NEXT: call void @llvm.assume(i1 [[LIM]])
-; CHECK-NEXT: [[R:%.*]] = call i8 @llvm.smin.i8(i8 [[X]], i8 42)
-; CHECK-NEXT: ret i8 [[R]]
+; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umin.i8(i8 [[X]], i8 42)
+; CHECK-NEXT: ret i8 [[TMP1]]
;
%lim = icmp sge i8 %x, 41
call void @llvm.assume(i1 %lim)
@@ -192,8 +189,8 @@ define i8 @test16(i8 %x) {
; CHECK-LABEL: @test16(
; CHECK-NEXT: [[LIM:%.*]] = icmp sge i8 [[X:%.*]], 41
; CHECK-NEXT: call void @llvm.assume(i1 [[LIM]])
-; CHECK-NEXT: [[R:%.*]] = call i8 @llvm.smax.i8(i8 [[X]], i8 42)
-; CHECK-NEXT: ret i8 [[R]]
+; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 42)
+; CHECK-NEXT: ret i8 [[TMP1]]
;
%lim = icmp sge i8 %x, 41
call void @llvm.assume(i1 %lim)
@@ -215,7 +212,6 @@ define i8 @test18(i8 %x) {
; CHECK-LABEL: @test18(
; CHECK-NEXT: [[LIM:%.*]] = icmp sle i8 [[X:%.*]], 42
; CHECK-NEXT: call void @llvm.assume(i1 [[LIM]])
-; CHECK-NEXT: [[R:%.*]] = call i8 @llvm.smax.i8(i8 [[X]], i8 42)
; CHECK-NEXT: ret i8 42
;
%lim = icmp sle i8 %x, 42
@@ -235,3 +231,127 @@ define i8 @test19(i8 %x) {
%r = call i8 @llvm.smax(i8 %x, i8 42)
ret i8 %r
}
+
+declare void @body(i32)
+
+define void @test_bidirectional() {
+; CHECK-LABEL: @test_bidirectional(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[FOR_BODY:%.*]]
+; CHECK: for.body:
+; CHECK-NEXT: [[INDVAR:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
+; CHECK-NEXT: call void @body(i32 65535)
+; CHECK-NEXT: [[INC]] = add nsw i32 [[INDVAR]], 1
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INDVAR]], 65535
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[EXIT:%.*]]
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ br label %for.body
+
+for.body:
+ %indvar = phi i32 [ 0, %entry ], [ %inc, %for.body ]
+ %smax = call i32 @llvm.smax.i32(i32 %indvar, i32 65535)
+ call void @body(i32 %smax)
+ %inc = add nsw i32 %indvar, 1
+ %cmp = icmp slt i32 %indvar, 65535
+ br i1 %cmp, label %for.body, label %exit
+
+exit:
+ ret void
+}
+
+define i64 @test_at_use(i1 %cond, i64 %x) {
+; CHECK-LABEL: @test_at_use(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[IF_END:%.*]]
+; CHECK: bb1:
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[X:%.*]], 0
+; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END]]
+; CHECK: if.then:
+; CHECK-NEXT: ret i64 0
+; CHECK: if.end:
+; CHECK-NEXT: [[PHI:%.*]] = phi i64 [ [[X]], [[BB1]] ], [ 0, [[ENTRY:%.*]] ]
+; CHECK-NEXT: ret i64 [[PHI]]
+;
+entry:
+ br i1 %cond, label %bb1, label %if.end
+
+bb1:
+ %val = call i64 @llvm.smax.i64(i64 %x, i64 -1)
+ %cmp = icmp slt i64 %x, 0
+ br i1 %cmp, label %if.then, label %if.end
+
+if.then:
+ ret i64 0
+
+if.end:
+ %phi = phi i64 [%val, %bb1], [0, %entry]
+ ret i64 %phi
+}
+
+define i8 @test_smax_to_umax_nneg(i8 %a, i8 %b) {
+; CHECK-LABEL: @test_smax_to_umax_nneg(
+; CHECK-NEXT: [[NNEG_A:%.*]] = and i8 [[A:%.*]], 127
+; CHECK-NEXT: [[NNEG_B:%.*]] = and i8 [[B:%.*]], 127
+; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[NNEG_A]], i8 [[NNEG_B]])
+; CHECK-NEXT: ret i8 [[TMP1]]
+;
+ %nneg_a = and i8 %a, 127
+ %nneg_b = and i8 %b, 127
+ %ret = call i8 @llvm.smax.i8(i8 %nneg_a, i8 %nneg_b)
+ ret i8 %ret
+}
+
+define i8 @test_smax_to_umax_neg(i8 %a, i8 %b) {
+; CHECK-LABEL: @test_smax_to_umax_neg(
+; CHECK-NEXT: [[NEG_A:%.*]] = or i8 [[A:%.*]], -128
+; CHECK-NEXT: [[NEG_B:%.*]] = or i8 [[B:%.*]], -128
+; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[NEG_A]], i8 [[NEG_B]])
+; CHECK-NEXT: ret i8 [[TMP1]]
+;
+ %neg_a = or i8 %a, 128
+ %neg_b = or i8 %b, 128
+ %ret = call i8 @llvm.smax.i8(i8 %neg_a, i8 %neg_b)
+ ret i8 %ret
+}
+
+define i8 @test_smin_to_umin_nneg(i8 %a, i8 %b) {
+; CHECK-LABEL: @test_smin_to_umin_nneg(
+; CHECK-NEXT: [[NNEG_A:%.*]] = and i8 [[A:%.*]], 127
+; CHECK-NEXT: [[NNEG_B:%.*]] = and i8 [[B:%.*]], 127
+; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umin.i8(i8 [[NNEG_A]], i8 [[NNEG_B]])
+; CHECK-NEXT: ret i8 [[TMP1]]
+;
+ %nneg_a = and i8 %a, 127
+ %nneg_b = and i8 %b, 127
+ %ret = call i8 @llvm.smin.i8(i8 %nneg_a, i8 %nneg_b)
+ ret i8 %ret
+}
+
+define i8 @test_smin_to_umin_neg(i8 %a, i8 %b) {
+; CHECK-LABEL: @test_smin_to_umin_neg(
+; CHECK-NEXT: [[NEG_A:%.*]] = or i8 [[A:%.*]], -128
+; CHECK-NEXT: [[NEG_B:%.*]] = or i8 [[B:%.*]], -128
+; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umin.i8(i8 [[NEG_A]], i8 [[NEG_B]])
+; CHECK-NEXT: ret i8 [[TMP1]]
+;
+ %neg_a = or i8 %a, 128
+ %neg_b = or i8 %b, 128
+ %ret = call i8 @llvm.smin.i8(i8 %neg_a, i8 %neg_b)
+ ret i8 %ret
+}
+
+define i8 @test_umax_nneg(i8 %a, i8 %b) {
+; CHECK-LABEL: @test_umax_nneg(
+; CHECK-NEXT: [[NNEG_A:%.*]] = and i8 [[A:%.*]], 127
+; CHECK-NEXT: [[NNEG_B:%.*]] = and i8 [[B:%.*]], 127
+; CHECK-NEXT: [[RET:%.*]] = call i8 @llvm.umax.i8(i8 [[NNEG_A]], i8 [[NNEG_B]])
+; CHECK-NEXT: ret i8 [[RET]]
+;
+ %nneg_a = and i8 %a, 127
+ %nneg_b = and i8 %b, 127
+ %ret = call i8 @llvm.umax.i8(i8 %nneg_a, i8 %nneg_b)
+ ret i8 %ret
+}
generated by cgit v1.1 at 2024-08-01 02:24:47 +0000