[llvm] r343561 - [InstCombine] Tests for ~A - Min/Max(~A, O) -> Max/Min(A, ~O) - A. NFC
David Green via llvm-commits
llvm-commits at lists.llvm.org
Tue Oct 2 02:06:49 PDT 2018
Author: dmgreen
Date: Tue Oct 2 02:06:49 2018
New Revision: 343561
URL: http://llvm.org/viewvc/llvm-project?rev=343561&view=rev
Log:
[InstCombine] Tests for ~A - Min/Max(~A, O) -> Max/Min(A, ~O) - A. NFC
Added:
llvm/trunk/test/Transforms/InstCombine/sub-minmax.ll
Modified:
llvm/trunk/test/Transforms/InstCombine/max-of-nots.ll
Modified: llvm/trunk/test/Transforms/InstCombine/max-of-nots.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/max-of-nots.ll?rev=343561&r1=343560&r2=343561&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/max-of-nots.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/max-of-nots.ll Tue Oct 2 02:06:49 2018
@@ -161,41 +161,6 @@ define i8 @umin3_not_all_ops_extra_uses(
ret i8 %minxyz
}
-define void @umin3_not_all_ops_extra_uses_invert_subs(i8 %x, i8 %y, i8 %z) {
-; CHECK-LABEL: @umin3_not_all_ops_extra_uses_invert_subs(
-; CHECK-NEXT: [[XN:%.*]] = xor i8 [[X:%.*]], -1
-; CHECK-NEXT: [[YN:%.*]] = xor i8 [[Y:%.*]], -1
-; CHECK-NEXT: [[ZN:%.*]] = xor i8 [[Z:%.*]], -1
-; CHECK-NEXT: [[CMPXZ:%.*]] = icmp ult i8 [[XN]], [[ZN]]
-; CHECK-NEXT: [[MINXZ:%.*]] = select i1 [[CMPXZ]], i8 [[XN]], i8 [[ZN]]
-; CHECK-NEXT: [[CMPXYZ:%.*]] = icmp ult i8 [[MINXZ]], [[YN]]
-; CHECK-NEXT: [[MINXYZ:%.*]] = select i1 [[CMPXYZ]], i8 [[MINXZ]], i8 [[YN]]
-; CHECK-NEXT: [[XMIN:%.*]] = sub i8 [[XN]], [[MINXYZ]]
-; CHECK-NEXT: [[YMIN:%.*]] = sub i8 [[YN]], [[MINXYZ]]
-; CHECK-NEXT: [[ZMIN:%.*]] = sub i8 [[ZN]], [[MINXYZ]]
-; CHECK-NEXT: call void @use8(i8 [[MINXYZ]])
-; CHECK-NEXT: call void @use8(i8 [[XMIN]])
-; CHECK-NEXT: call void @use8(i8 [[YMIN]])
-; CHECK-NEXT: call void @use8(i8 [[ZMIN]])
-; CHECK-NEXT: ret void
-;
- %xn = xor i8 %x, -1
- %yn = xor i8 %y, -1
- %zn = xor i8 %z, -1
- %cmpxz = icmp ult i8 %xn, %zn
- %minxz = select i1 %cmpxz, i8 %xn, i8 %zn
- %cmpxyz = icmp ult i8 %minxz, %yn
- %minxyz = select i1 %cmpxyz, i8 %minxz, i8 %yn
- %xmin = sub i8 %xn, %minxyz
- %ymin = sub i8 %yn, %minxyz
- %zmin = sub i8 %zn, %minxyz
- call void @use8(i8 %minxyz)
- call void @use8(i8 %xmin)
- call void @use8(i8 %ymin)
- call void @use8(i8 %zmin)
- ret void
-}
-
define i32 @compute_min_3(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @compute_min_3(
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[Y:%.*]], [[X:%.*]]
Added: llvm/trunk/test/Transforms/InstCombine/sub-minmax.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/sub-minmax.ll?rev=343561&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/sub-minmax.ll (added)
+++ llvm/trunk/test/Transforms/InstCombine/sub-minmax.ll Tue Oct 2 02:06:49 2018
@@ -0,0 +1,359 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define i32 @max_na_b_minux_na(i32 %A, i32 %B) {
+; CHECK-LABEL: @max_na_b_minux_na(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[L0:%.*]] = icmp ult i32 [[NOT]], [[B:%.*]]
+; CHECK-NEXT: [[L1:%.*]] = select i1 [[L0]], i32 [[NOT]], i32 [[B]]
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[L1]], [[NOT]]
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %l0 = icmp ult i32 %not, %B
+ %l1 = select i1 %l0, i32 %not, i32 %B
+ %x = sub i32 %l1, %not
+ ret i32 %x
+}
+
+define i32 @na_minus_max_na_b(i32 %A, i32 %B) {
+; CHECK-LABEL: @na_minus_max_na_b(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[L0:%.*]] = icmp ult i32 [[NOT]], [[B:%.*]]
+; CHECK-NEXT: [[L1:%.*]] = select i1 [[L0]], i32 [[NOT]], i32 [[B]]
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[NOT]], [[L1]]
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %l0 = icmp ult i32 %not, %B
+ %l1 = select i1 %l0, i32 %not, i32 %B
+ %x = sub i32 %not, %l1
+ ret i32 %x
+}
+
+define i32 @max_b_na_minus_na(i32 %A, i32 %B) {
+; CHECK-LABEL: @max_b_na_minus_na(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[L0:%.*]] = icmp ugt i32 [[NOT]], [[B:%.*]]
+; CHECK-NEXT: [[L1:%.*]] = select i1 [[L0]], i32 [[B]], i32 [[NOT]]
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[L1]], [[NOT]]
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %l0 = icmp ugt i32 %not, %B
+ %l1 = select i1 %l0, i32 %B, i32 %not
+ %x = sub i32 %l1, %not
+ ret i32 %x
+}
+
+define i32 @na_minus_max_b_na(i32 %A, i32 %B) {
+; CHECK-LABEL: @na_minus_max_b_na(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[L0:%.*]] = icmp ugt i32 [[NOT]], [[B:%.*]]
+; CHECK-NEXT: [[L1:%.*]] = select i1 [[L0]], i32 [[B]], i32 [[NOT]]
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[NOT]], [[L1]]
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %l0 = icmp ugt i32 %not, %B
+ %l1 = select i1 %l0, i32 %B, i32 %not
+ %x = sub i32 %not, %l1
+ ret i32 %x
+}
+
+
+define i32 @max_na_bi_minux_na(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @max_na_bi_minux_na(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A:%.*]], [[BI:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[BI]], i32 [[A]]
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[A]], [[TMP2]]
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %B = xor i32 %Bi, -1
+ %not = xor i32 %A, -1
+ %l0 = icmp ult i32 %not, %B
+ %l1 = select i1 %l0, i32 %not, i32 %B
+ %x = sub i32 %l1, %not
+ ret i32 %x
+}
+
+define i32 @na_minus_max_na_bi(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @na_minus_max_na_bi(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A:%.*]], [[BI:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[BI]], i32 [[A]]
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[TMP2]], [[A]]
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %B = xor i32 %Bi, -1
+ %not = xor i32 %A, -1
+ %l0 = icmp ult i32 %not, %B
+ %l1 = select i1 %l0, i32 %not, i32 %B
+ %x = sub i32 %not, %l1
+ ret i32 %x
+}
+
+define i32 @max_bi_na_minus_na(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @max_bi_na_minus_na(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A:%.*]], [[BI:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[BI]], i32 [[A]]
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[A]], [[TMP2]]
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %B = xor i32 %Bi, -1
+ %not = xor i32 %A, -1
+ %l0 = icmp ugt i32 %not, %B
+ %l1 = select i1 %l0, i32 %B, i32 %not
+ %x = sub i32 %l1, %not
+ ret i32 %x
+}
+
+define i32 @na_minus_max_bi_na(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @na_minus_max_bi_na(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A:%.*]], [[BI:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[BI]], i32 [[A]]
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[TMP2]], [[A]]
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %B = xor i32 %Bi, -1
+ %not = xor i32 %A, -1
+ %l0 = icmp ugt i32 %not, %B
+ %l1 = select i1 %l0, i32 %B, i32 %not
+ %x = sub i32 %not, %l1
+ ret i32 %x
+}
+
+
+define i32 @max_na_bi_minux_na_use(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @max_na_bi_minux_na_use(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[L0:%.*]] = icmp ult i32 [[NOT]], 31
+; CHECK-NEXT: [[L1:%.*]] = select i1 [[L0]], i32 [[NOT]], i32 31
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[L1]], [[NOT]]
+; CHECK-NEXT: call void @use32(i32 [[L1]])
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %l0 = icmp ult i32 %not, 31
+ %l1 = select i1 %l0, i32 %not, i32 31
+ %x = sub i32 %l1, %not
+ call void @use32(i32 %l1)
+ ret i32 %x
+}
+
+define i32 @na_minus_max_na_bi_use(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @na_minus_max_na_bi_use(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[L0:%.*]] = icmp ult i32 [[NOT]], 31
+; CHECK-NEXT: [[L1:%.*]] = select i1 [[L0]], i32 [[NOT]], i32 31
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[NOT]], [[L1]]
+; CHECK-NEXT: call void @use32(i32 [[L1]])
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %l0 = icmp ult i32 %not, 31
+ %l1 = select i1 %l0, i32 %not, i32 31
+ %x = sub i32 %not, %l1
+ call void @use32(i32 %l1)
+ ret i32 %x
+}
+
+define i32 @max_bi_na_minus_na_use(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @max_bi_na_minus_na_use(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A:%.*]], [[BI:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[BI]], i32 [[A]]
+; CHECK-NEXT: [[L1:%.*]] = xor i32 [[TMP2]], -1
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[A]], [[TMP2]]
+; CHECK-NEXT: call void @use32(i32 [[L1]])
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %B = xor i32 %Bi, -1
+ %l0 = icmp ult i32 %B, %not
+ %l1 = select i1 %l0, i32 %B, i32 %not
+ %x = sub i32 %l1, %not
+ call void @use32(i32 %l1)
+ ret i32 %x
+}
+
+define i32 @na_minus_max_bi_na_use(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @na_minus_max_bi_na_use(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A:%.*]], [[BI:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[BI]], i32 [[A]]
+; CHECK-NEXT: [[L1:%.*]] = xor i32 [[TMP2]], -1
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[TMP2]], [[A]]
+; CHECK-NEXT: call void @use32(i32 [[L1]])
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %B = xor i32 %Bi, -1
+ %l0 = icmp ult i32 %B, %not
+ %l1 = select i1 %l0, i32 %B, i32 %not
+ %x = sub i32 %not, %l1
+ call void @use32(i32 %l1)
+ ret i32 %x
+}
+
+
+define i32 @max_na_bi_minux_na_use2(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @max_na_bi_minux_na_use2(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[L0:%.*]] = icmp ult i32 [[NOT]], 31
+; CHECK-NEXT: [[L1:%.*]] = select i1 [[L0]], i32 [[NOT]], i32 31
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[L1]], [[NOT]]
+; CHECK-NEXT: call void @use32(i32 [[L1]])
+; CHECK-NEXT: call void @use32(i32 [[NOT]])
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %l0 = icmp ult i32 %not, 31
+ %l1 = select i1 %l0, i32 %not, i32 31
+ %x = sub i32 %l1, %not
+ call void @use32(i32 %l1)
+ call void @use32(i32 %not)
+ ret i32 %x
+}
+
+define i32 @na_minus_max_na_bi_use2(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @na_minus_max_na_bi_use2(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[L0:%.*]] = icmp ult i32 [[NOT]], 31
+; CHECK-NEXT: [[L1:%.*]] = select i1 [[L0]], i32 [[NOT]], i32 31
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[NOT]], [[L1]]
+; CHECK-NEXT: call void @use32(i32 [[L1]])
+; CHECK-NEXT: call void @use32(i32 [[NOT]])
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %l0 = icmp ult i32 %not, 31
+ %l1 = select i1 %l0, i32 %not, i32 31
+ %x = sub i32 %not, %l1
+ call void @use32(i32 %l1)
+ call void @use32(i32 %not)
+ ret i32 %x
+}
+
+define i32 @max_bi_na_minus_na_use2(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @max_bi_na_minus_na_use2(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A]], [[BI:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[BI]], i32 [[A]]
+; CHECK-NEXT: [[L1:%.*]] = xor i32 [[TMP2]], -1
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[A]], [[TMP2]]
+; CHECK-NEXT: call void @use32(i32 [[L1]])
+; CHECK-NEXT: call void @use32(i32 [[NOT]])
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %B = xor i32 %Bi, -1
+ %l0 = icmp ult i32 %B, %not
+ %l1 = select i1 %l0, i32 %B, i32 %not
+ %x = sub i32 %l1, %not
+ call void @use32(i32 %l1)
+ call void @use32(i32 %not)
+ ret i32 %x
+}
+
+define i32 @na_minus_max_bi_na_use2(i32 %A, i32 %Bi) {
+; CHECK-LABEL: @na_minus_max_bi_na_use2(
+; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1
+; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A]], [[BI:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[BI]], i32 [[A]]
+; CHECK-NEXT: [[L1:%.*]] = xor i32 [[TMP2]], -1
+; CHECK-NEXT: [[X:%.*]] = sub i32 [[TMP2]], [[A]]
+; CHECK-NEXT: call void @use32(i32 [[L1]])
+; CHECK-NEXT: call void @use32(i32 [[NOT]])
+; CHECK-NEXT: ret i32 [[X]]
+;
+ %not = xor i32 %A, -1
+ %B = xor i32 %Bi, -1
+ %l0 = icmp ult i32 %B, %not
+ %l1 = select i1 %l0, i32 %B, i32 %not
+ %x = sub i32 %not, %l1
+ call void @use32(i32 %l1)
+ call void @use32(i32 %not)
+ ret i32 %x
+}
+
+define i8 @umin_not_sub(i8 %x, i8 %y) {
+; CHECK-LABEL: @umin_not_sub(
+; CHECK-NEXT: [[NX:%.*]] = xor i8 [[X:%.*]], -1
+; CHECK-NEXT: [[NY:%.*]] = xor i8 [[Y:%.*]], -1
+; CHECK-NEXT: [[CMPXY:%.*]] = icmp ult i8 [[NX]], [[NY]]
+; CHECK-NEXT: [[MINXY:%.*]] = select i1 [[CMPXY]], i8 [[NX]], i8 [[NY]]
+; CHECK-NEXT: [[SUBX:%.*]] = sub i8 [[NX]], [[MINXY]]
+; CHECK-NEXT: [[SUBY:%.*]] = sub i8 [[NY]], [[MINXY]]
+; CHECK-NEXT: call void @use8(i8 [[SUBX]])
+; CHECK-NEXT: call void @use8(i8 [[SUBY]])
+; CHECK-NEXT: ret i8 [[MINXY]]
+;
+ %nx = xor i8 %x, -1
+ %ny = xor i8 %y, -1
+ %cmpxy = icmp ult i8 %nx, %ny
+ %minxy = select i1 %cmpxy, i8 %nx, i8 %ny
+ %subx = sub i8 %nx, %minxy
+ %suby = sub i8 %ny, %minxy
+ call void @use8(i8 %subx)
+ call void @use8(i8 %suby)
+ ret i8 %minxy
+}
+
+define i8 @umin_not_sub_rev(i8 %x, i8 %y) {
+; CHECK-LABEL: @umin_not_sub_rev(
+; CHECK-NEXT: [[NX:%.*]] = xor i8 [[X:%.*]], -1
+; CHECK-NEXT: [[NY:%.*]] = xor i8 [[Y:%.*]], -1
+; CHECK-NEXT: [[CMPXY:%.*]] = icmp ult i8 [[NX]], [[NY]]
+; CHECK-NEXT: [[MINXY:%.*]] = select i1 [[CMPXY]], i8 [[NX]], i8 [[NY]]
+; CHECK-NEXT: [[SUBX:%.*]] = sub i8 [[MINXY]], [[NX]]
+; CHECK-NEXT: [[SUBY:%.*]] = sub i8 [[MINXY]], [[NY]]
+; CHECK-NEXT: call void @use8(i8 [[SUBX]])
+; CHECK-NEXT: call void @use8(i8 [[SUBY]])
+; CHECK-NEXT: ret i8 [[MINXY]]
+;
+ %nx = xor i8 %x, -1
+ %ny = xor i8 %y, -1
+ %cmpxy = icmp ult i8 %nx, %ny
+ %minxy = select i1 %cmpxy, i8 %nx, i8 %ny
+ %subx = sub i8 %minxy, %nx
+ %suby = sub i8 %minxy, %ny
+ call void @use8(i8 %subx)
+ call void @use8(i8 %suby)
+ ret i8 %minxy
+}
+
+define void @umin3_not_all_ops_extra_uses_invert_subs(i8 %x, i8 %y, i8 %z) {
+; CHECK-LABEL: @umin3_not_all_ops_extra_uses_invert_subs(
+; CHECK-NEXT: [[XN:%.*]] = xor i8 [[X:%.*]], -1
+; CHECK-NEXT: [[YN:%.*]] = xor i8 [[Y:%.*]], -1
+; CHECK-NEXT: [[ZN:%.*]] = xor i8 [[Z:%.*]], -1
+; CHECK-NEXT: [[CMPXZ:%.*]] = icmp ult i8 [[XN]], [[ZN]]
+; CHECK-NEXT: [[MINXZ:%.*]] = select i1 [[CMPXZ]], i8 [[XN]], i8 [[ZN]]
+; CHECK-NEXT: [[CMPXYZ:%.*]] = icmp ult i8 [[MINXZ]], [[YN]]
+; CHECK-NEXT: [[MINXYZ:%.*]] = select i1 [[CMPXYZ]], i8 [[MINXZ]], i8 [[YN]]
+; CHECK-NEXT: [[XMIN:%.*]] = sub i8 [[XN]], [[MINXYZ]]
+; CHECK-NEXT: [[YMIN:%.*]] = sub i8 [[YN]], [[MINXYZ]]
+; CHECK-NEXT: [[ZMIN:%.*]] = sub i8 [[ZN]], [[MINXYZ]]
+; CHECK-NEXT: call void @use8(i8 [[MINXYZ]])
+; CHECK-NEXT: call void @use8(i8 [[XMIN]])
+; CHECK-NEXT: call void @use8(i8 [[YMIN]])
+; CHECK-NEXT: call void @use8(i8 [[ZMIN]])
+; CHECK-NEXT: ret void
+;
+ %xn = xor i8 %x, -1
+ %yn = xor i8 %y, -1
+ %zn = xor i8 %z, -1
+ %cmpxz = icmp ult i8 %xn, %zn
+ %minxz = select i1 %cmpxz, i8 %xn, i8 %zn
+ %cmpxyz = icmp ult i8 %minxz, %yn
+ %minxyz = select i1 %cmpxyz, i8 %minxz, i8 %yn
+ %xmin = sub i8 %xn, %minxyz
+ %ymin = sub i8 %yn, %minxyz
+ %zmin = sub i8 %zn, %minxyz
+ call void @use8(i8 %minxyz)
+ call void @use8(i8 %xmin)
+ call void @use8(i8 %ymin)
+ call void @use8(i8 %zmin)
+ ret void
+}
+
+declare void @use8(i8)
+declare void @use32(i32 %u)
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