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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=instcombine -S < %s | FileCheck %s
declare void @use_i8(i8)
define i8 @mul_selectp2_x(i8 %x, i1 %c) {
; CHECK-LABEL: @mul_selectp2_x(
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[C:%.*]], i8 1, i8 2
; CHECK-NEXT: [[R:%.*]] = shl i8 [[X:%.*]], [[TMP1]]
; CHECK-NEXT: ret i8 [[R]]
;
%s = select i1 %c, i8 2, i8 4
%r = mul i8 %s, %x
ret i8 %r
}
define i8 @mul_selectp2_x_propegate_nuw(i8 %x, i1 %c) {
; CHECK-LABEL: @mul_selectp2_x_propegate_nuw(
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[C:%.*]], i8 1, i8 2
; CHECK-NEXT: [[R:%.*]] = shl nuw i8 [[X:%.*]], [[TMP1]]
; CHECK-NEXT: ret i8 [[R]]
;
%s = select i1 %c, i8 2, i8 4
%r = mul nuw nsw i8 %s, %x
ret i8 %r
}
define i8 @mul_selectp2_x_multiuse_fixme(i8 %x, i1 %c) {
; CHECK-LABEL: @mul_selectp2_x_multiuse_fixme(
; CHECK-NEXT: [[S:%.*]] = select i1 [[C:%.*]], i8 2, i8 4
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[C]], i8 1, i8 2
; CHECK-NEXT: [[R:%.*]] = shl i8 [[X:%.*]], [[TMP1]]
; CHECK-NEXT: call void @use_i8(i8 [[S]])
; CHECK-NEXT: ret i8 [[R]]
;
%s = select i1 %c, i8 2, i8 4
%r = mul i8 %s, %x
call void @use_i8(i8 %s)
ret i8 %r
}
define i8 @mul_selectp2_x_non_const(i8 %x, i1 %c, i8 %yy) {
; CHECK-LABEL: @mul_selectp2_x_non_const(
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[C:%.*]], i8 1, i8 [[YY:%.*]]
; CHECK-NEXT: [[R:%.*]] = shl i8 [[X:%.*]], [[TMP1]]
; CHECK-NEXT: ret i8 [[R]]
;
%y = shl i8 1, %yy
%s = select i1 %c, i8 2, i8 %y
%r = mul i8 %s, %x
ret i8 %r
}
define i8 @mul_selectp2_x_non_const_multiuse(i8 %x, i1 %c, i8 %yy) {
; CHECK-LABEL: @mul_selectp2_x_non_const_multiuse(
; CHECK-NEXT: [[Y:%.*]] = shl nuw i8 1, [[YY:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[C:%.*]], i8 1, i8 [[YY]]
; CHECK-NEXT: [[R:%.*]] = shl i8 [[X:%.*]], [[TMP1]]
; CHECK-NEXT: call void @use_i8(i8 [[Y]])
; CHECK-NEXT: ret i8 [[R]]
;
%y = shl i8 1, %yy
%s = select i1 %c, i8 2, i8 %y
%r = mul i8 %s, %x
call void @use_i8(i8 %y)
ret i8 %r
}
define i8 @mul_x_selectp2(i8 %xx, i1 %c) {
; CHECK-LABEL: @mul_x_selectp2(
; CHECK-NEXT: [[X:%.*]] = mul i8 [[XX:%.*]], [[XX]]
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[C:%.*]], i8 3, i8 0
; CHECK-NEXT: [[R:%.*]] = shl i8 [[X]], [[TMP1]]
; CHECK-NEXT: ret i8 [[R]]
;
%x = mul i8 %xx, %xx
%s = select i1 %c, i8 8, i8 1
%r = mul i8 %x, %s
ret i8 %r
}
define i8 @mul_select_nonp2_x_fail(i8 %x, i1 %c) {
; CHECK-LABEL: @mul_select_nonp2_x_fail(
; CHECK-NEXT: [[S:%.*]] = select i1 [[C:%.*]], i8 2, i8 5
; CHECK-NEXT: [[R:%.*]] = mul i8 [[S]], [[X:%.*]]
; CHECK-NEXT: ret i8 [[R]]
;
%s = select i1 %c, i8 2, i8 5
%r = mul i8 %s, %x
ret i8 %r
}
define <2 x i8> @mul_x_selectp2_vec(<2 x i8> %xx, i1 %c) {
; CHECK-LABEL: @mul_x_selectp2_vec(
; CHECK-NEXT: [[X:%.*]] = mul <2 x i8> [[XX:%.*]], [[XX]]
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[C:%.*]], <2 x i8> <i8 3, i8 4>, <2 x i8> <i8 2, i8 0>
; CHECK-NEXT: [[R:%.*]] = shl <2 x i8> [[X]], [[TMP1]]
; CHECK-NEXT: ret <2 x i8> [[R]]
;
%x = mul <2 x i8> %xx, %xx
%s = select i1 %c, <2 x i8> <i8 8, i8 16>, <2 x i8> <i8 4, i8 1>
%r = mul <2 x i8> %x, %s
ret <2 x i8> %r
}
define i8 @shl_add_log_may_cause_poison_pr62175_fail(i8 %x, i8 %y) {
; CHECK-LABEL: @shl_add_log_may_cause_poison_pr62175_fail(
; CHECK-NEXT: [[SHL:%.*]] = shl i8 4, [[X:%.*]]
; CHECK-NEXT: [[MUL:%.*]] = mul i8 [[SHL]], [[Y:%.*]]
; CHECK-NEXT: ret i8 [[MUL]]
;
%shl = shl i8 4, %x
%mul = mul i8 %y, %shl
ret i8 %mul
}
define i8 @shl_add_log_may_cause_poison_pr62175_with_nuw(i8 %x, i8 %y) {
; CHECK-LABEL: @shl_add_log_may_cause_poison_pr62175_with_nuw(
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[X:%.*]], 2
; CHECK-NEXT: [[MUL:%.*]] = shl i8 [[Y:%.*]], [[TMP1]]
; CHECK-NEXT: ret i8 [[MUL]]
;
%shl = shl nuw i8 4, %x
%mul = mul i8 %y, %shl
ret i8 %mul
}
define i8 @shl_add_log_may_cause_poison_pr62175_with_nsw(i8 %x, i8 %y) {
; CHECK-LABEL: @shl_add_log_may_cause_poison_pr62175_with_nsw(
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[X:%.*]], 2
; CHECK-NEXT: [[MUL:%.*]] = shl i8 [[Y:%.*]], [[TMP1]]
; CHECK-NEXT: ret i8 [[MUL]]
;
%shl = shl nsw i8 4, %x
%mul = mul i8 %y, %shl
ret i8 %mul
}
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