mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-02-01 13:11:39 +01:00
[NFC] Added tests for (1 << (C - x)) -> ((1 << C) >> x)
llvm-svn: 364060
This commit is contained in:
David Bolvansky
parent
3b26b2fac1
commit
55c9ce9744
152
test/Transforms/InstCombine/shl-sub.ll
Normal file
152
test/Transforms/InstCombine/shl-sub.ll
Normal file
@ -0,0 +1,152 @@
|
||||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||||
; RUN: opt -instcombine -S < %s | FileCheck %s
|
||||
|
||||
define i32 @shl_sub_i32(i32 %x) {
|
||||
; CHECK-LABEL: @shl_sub_i32(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub i32 31, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i32 1, [[S]]
|
||||
; CHECK-NEXT: ret i32 [[R]]
|
||||
;
|
||||
%s = sub i32 31, %x
|
||||
%r = shl i32 1, %s
|
||||
ret i32 %r
|
||||
}
|
||||
|
||||
define i32 @shl_sub_multiuse_i32(i32 %x) {
|
||||
; CHECK-LABEL: @shl_sub_multiuse_i32(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub i32 31, [[X:%.*]]
|
||||
; CHECK-NEXT: call void @use(i32 [[S]])
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i32 1, [[S]]
|
||||
; CHECK-NEXT: ret i32 [[R]]
|
||||
;
|
||||
%s = sub i32 31, %x
|
||||
call void @use(i32 %s)
|
||||
%r = shl i32 1, %s
|
||||
ret i32 %r
|
||||
}
|
||||
|
||||
define i8 @shl_sub_i8(i8 %x) {
|
||||
; CHECK-LABEL: @shl_sub_i8(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub i8 7, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i8 1, [[S]]
|
||||
; CHECK-NEXT: ret i8 [[R]]
|
||||
;
|
||||
%s = sub i8 7, %x
|
||||
%r = shl i8 1, %s
|
||||
ret i8 %r
|
||||
}
|
||||
|
||||
define i64 @shl_sub_i64(i64 %x) {
|
||||
; CHECK-LABEL: @shl_sub_i64(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub i64 63, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i64 1, [[S]]
|
||||
; CHECK-NEXT: ret i64 [[R]]
|
||||
;
|
||||
%s = sub i64 63, %x
|
||||
%r = shl i64 1, %s
|
||||
ret i64 %r
|
||||
}
|
||||
|
||||
define <2 x i64> @shl_sub_i64_vec(<2 x i64> %x) {
|
||||
; CHECK-LABEL: @shl_sub_i64_vec(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub <2 x i64> <i64 63, i64 63>, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl <2 x i64> <i64 1, i64 1>, [[S]]
|
||||
; CHECK-NEXT: ret <2 x i64> [[R]]
|
||||
;
|
||||
%s = sub <2 x i64> <i64 63, i64 63>, %x
|
||||
%r = shl <2 x i64> <i64 1, i64 1>, %s
|
||||
ret <2 x i64> %r
|
||||
}
|
||||
|
||||
; Negative tests
|
||||
|
||||
define i32 @shl_bad_sub_i32(i32 %x) {
|
||||
; CHECK-LABEL: @shl_bad_sub_i32(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub i32 32, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i32 1, [[S]]
|
||||
; CHECK-NEXT: ret i32 [[R]]
|
||||
;
|
||||
%s = sub i32 32, %x
|
||||
%r = shl i32 1, %s
|
||||
ret i32 %r
|
||||
}
|
||||
|
||||
define i32 @bad_shl_sub_i32(i32 %x) {
|
||||
; CHECK-LABEL: @bad_shl_sub_i32(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub i32 31, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i32 2, [[S]]
|
||||
; CHECK-NEXT: ret i32 [[R]]
|
||||
;
|
||||
%s = sub i32 31, %x
|
||||
%r = shl i32 2, %s
|
||||
ret i32 %r
|
||||
}
|
||||
|
||||
define i32 @shl_bad_sub2_i32(i32 %x) {
|
||||
; CHECK-LABEL: @shl_bad_sub2_i32(
|
||||
; CHECK-NEXT: [[S:%.*]] = add i32 [[X:%.*]], -31
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i32 1, [[S]]
|
||||
; CHECK-NEXT: ret i32 [[R]]
|
||||
;
|
||||
%s = sub i32 %x, 31
|
||||
%r = shl i32 1, %s
|
||||
ret i32 %r
|
||||
}
|
||||
|
||||
define i32 @bad_shl2_sub_i32(i32 %x) {
|
||||
; CHECK-LABEL: @bad_shl2_sub_i32(
|
||||
; CHECK-NEXT: [[S:%.*]] = add i32 [[X:%.*]], -31
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i32 1, [[S]]
|
||||
; CHECK-NEXT: ret i32 [[R]]
|
||||
;
|
||||
%s = sub i32 %x, 31
|
||||
%r = shl i32 1, %s
|
||||
ret i32 %r
|
||||
}
|
||||
|
||||
define i8 @shl_bad_sub_i8(i8 %x) {
|
||||
; CHECK-LABEL: @shl_bad_sub_i8(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub i8 4, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i8 1, [[S]]
|
||||
; CHECK-NEXT: ret i8 [[R]]
|
||||
;
|
||||
%s = sub i8 4, %x
|
||||
%r = shl i8 1, %s
|
||||
ret i8 %r
|
||||
}
|
||||
|
||||
define i64 @shl_bad_sub_i64(i64 %x) {
|
||||
; CHECK-LABEL: @shl_bad_sub_i64(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub i64 67, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl i64 1, [[S]]
|
||||
; CHECK-NEXT: ret i64 [[R]]
|
||||
;
|
||||
%s = sub i64 67, %x
|
||||
%r = shl i64 1, %s
|
||||
ret i64 %r
|
||||
}
|
||||
|
||||
define <2 x i64> @shl_bad_sub_i64_vec(<2 x i64> %x) {
|
||||
; CHECK-LABEL: @shl_bad_sub_i64_vec(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub <2 x i64> <i64 53, i64 53>, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl <2 x i64> <i64 1, i64 1>, [[S]]
|
||||
; CHECK-NEXT: ret <2 x i64> [[R]]
|
||||
;
|
||||
%s = sub <2 x i64> <i64 53, i64 53>, %x
|
||||
%r = shl <2 x i64> <i64 1, i64 1>, %s
|
||||
ret <2 x i64> %r
|
||||
}
|
||||
|
||||
define <2 x i64> @bad_shl_sub_i64_vec(<2 x i64> %x) {
|
||||
; CHECK-LABEL: @bad_shl_sub_i64_vec(
|
||||
; CHECK-NEXT: [[S:%.*]] = sub <2 x i64> <i64 63, i64 63>, [[X:%.*]]
|
||||
; CHECK-NEXT: [[R:%.*]] = shl <2 x i64> <i64 2, i64 2>, [[S]]
|
||||
; CHECK-NEXT: ret <2 x i64> [[R]]
|
||||
;
|
||||
%s = sub <2 x i64> <i64 63, i64 63>, %x
|
||||
%r = shl <2 x i64> <i64 2, i64 2>, %s
|
||||
ret <2 x i64> %r
|
||||
}
|
||||
|
||||
|
||||
declare void @use(i32)
|
||||
Loading…
x
Reference in New Issue
Block a user