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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -codegenprepare -S -mtriple=riscv64 < %s | FileCheck %s
define i8 @hoist_add(i8 %x) {
; CHECK-LABEL: define i8 @hoist_add(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[INC:%.*]] = add i8 [[X]], 1
; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i8 [[INC]], 0
; CHECK-NEXT: br i1 [[TMP0]], label [[EXIT:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RETVAL:%.*]] = phi i8 [ [[INC]], [[IF_THEN]] ], [ -1, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i8 [[RETVAL]]
;
entry:
%cmp = icmp eq i8 %x, -1
br i1 %cmp, label %exit, label %if.then
if.then:
%inc = add nuw nsw i8 %x, 1
br label %exit
exit:
%retval = phi i8 [ %inc, %if.then ], [ -1, %entry ]
ret i8 %retval
}
define i8 @hoist_lshr(i8 %x) {
; CHECK-LABEL: define i8 @hoist_lshr(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[INC:%.*]] = lshr i8 [[X]], 3
; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i8 [[INC]], 0
; CHECK-NEXT: br i1 [[TMP0]], label [[EXIT:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RETVAL:%.*]] = phi i8 [ [[INC]], [[IF_THEN]] ], [ -1, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i8 [[RETVAL]]
;
entry:
%cmp = icmp ult i8 %x, 8
br i1 %cmp, label %exit, label %if.then
if.then:
%inc = lshr exact i8 %x, 3
br label %exit
exit:
%retval = phi i8 [ %inc, %if.then ], [ -1, %entry ]
ret i8 %retval
}
define i8 @nomove_add(i8 %x) {
; CHECK-LABEL: define i8 @nomove_add(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[INC:%.*]] = add i8 [[X]], 1
; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i8 [[INC]], 0
; CHECK-NEXT: br i1 [[TMP0]], label [[EXIT:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RETVAL:%.*]] = phi i8 [ [[INC]], [[IF_THEN]] ], [ -1, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i8 [[RETVAL]]
;
entry:
%inc = add nuw nsw i8 %x, 1
%cmp = icmp eq i8 %x, -1
br i1 %cmp, label %exit, label %if.then
if.then:
br label %exit
exit:
%retval = phi i8 [ %inc, %if.then ], [ -1, %entry ]
ret i8 %retval
}
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