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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=sccp -S | FileCheck %s
define i32 @zext_lshr(i1 %t0) {
; CHECK-LABEL: @zext_lshr(
; CHECK-NEXT: [[T1:%.*]] = zext i1 [[T0:%.*]] to i32
; CHECK-NEXT: ret i32 0
;
%t1 = zext i1 %t0 to i32
%t2 = lshr i32 %t1, 1
ret i32 %t2
}
define i1 @zext_icmp(i1 %t0) {
; CHECK-LABEL: @zext_icmp(
; CHECK-NEXT: [[T1:%.*]] = zext i1 [[T0:%.*]] to i32
; CHECK-NEXT: ret i1 false
;
%t1 = zext i1 %t0 to i32
%t2 = icmp eq i32 %t1, 2
ret i1 %t2
}
; negative test. SCCP operates poorly with vector ranges
define <2 x i1> @zext_vector(<2 x i1> %t0) {
; CHECK-LABEL: @zext_vector(
; CHECK-NEXT: [[T1:%.*]] = zext <2 x i1> [[T0:%.*]] to <2 x i32>
; CHECK-NEXT: [[T2:%.*]] = icmp eq <2 x i32> [[T1]], <i32 2, i32 2>
; CHECK-NEXT: ret <2 x i1> [[T2]]
;
%t1 = zext <2 x i1> %t0 to <2 x i32>
%t2 = icmp eq <2 x i32> %t1, <i32 2, i32 2>
ret <2 x i1> %t2
}
; negative test. SCCP operates poorly with vector ranges
define <2 x i1> @zext_vector2(<2 x i1> %t0) {
; CHECK-LABEL: @zext_vector2(
; CHECK-NEXT: [[T1:%.*]] = zext <2 x i1> [[T0:%.*]] to <2 x i32>
; CHECK-NEXT: [[T2:%.*]] = add <2 x i32> [[T1]], <i32 2, i32 2>
; CHECK-NEXT: [[T3:%.*]] = icmp eq <2 x i32> [[T1]], [[T2]]
; CHECK-NEXT: ret <2 x i1> [[T3]]
;
%t1 = zext <2 x i1> %t0 to <2 x i32>
%t2 = add <2 x i32> %t1, <i32 2, i32 2>
%t3 = icmp eq <2 x i32> %t1, %t2
ret <2 x i1> %t3
}
; negative test: %t2 can be replaced by %t1, but SCCP operates by ranges only
define i32 @sext_ashr(i1 %t0) {
; CHECK-LABEL: @sext_ashr(
; CHECK-NEXT: [[T1:%.*]] = sext i1 [[T0:%.*]] to i32
; CHECK-NEXT: [[T2:%.*]] = ashr i32 [[T1]], 1
; CHECK-NEXT: ret i32 [[T2]]
;
%t1 = sext i1 %t0 to i32
%t2 = ashr i32 %t1, 1
ret i32 %t2
}
define i1 @sext_icmp(i1 %t0) {
; CHECK-LABEL: @sext_icmp(
; CHECK-NEXT: [[T1:%.*]] = sext i1 [[T0:%.*]] to i32
; CHECK-NEXT: ret i1 false
;
%t1 = sext i1 %t0 to i32
%t2 = icmp eq i32 %t1, 2
ret i1 %t2
}
; negative test. SCCP operates poorly with vector ranges
define <2 x i1> @sext_vector(<2 x i1> %t0) {
; CHECK-LABEL: @sext_vector(
; CHECK-NEXT: [[T1:%.*]] = sext <2 x i1> [[T0:%.*]] to <2 x i32>
; CHECK-NEXT: [[T2:%.*]] = icmp eq <2 x i32> [[T1]], <i32 2, i32 2>
; CHECK-NEXT: ret <2 x i1> [[T2]]
;
%t1 = sext <2 x i1> %t0 to <2 x i32>
%t2 = icmp eq <2 x i32> %t1, <i32 2, i32 2>
ret <2 x i1> %t2
}
; negative test. SCCP operates poorly with vector ranges
define <2 x i1> @sext_vector2(<2 x i1> %t0) {
; CHECK-LABEL: @sext_vector2(
; CHECK-NEXT: [[T1:%.*]] = sext <2 x i1> [[T0:%.*]] to <2 x i32>
; CHECK-NEXT: [[T2:%.*]] = add <2 x i32> [[T1]], <i32 2, i32 2>
; CHECK-NEXT: [[T3:%.*]] = icmp eq <2 x i32> [[T1]], [[T2]]
; CHECK-NEXT: ret <2 x i1> [[T3]]
;
%t1 = sext <2 x i1> %t0 to <2 x i32>
%t2 = add <2 x i32> %t1, <i32 2, i32 2>
%t3 = icmp eq <2 x i32> %t1, %t2
ret <2 x i1> %t3
}
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