forked from OSchip/llvm-project
126 lines
4.6 KiB
LLVM
126 lines
4.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -O1 -S < %s | FileCheck %s --check-prefixes=CHECK,CHECK-01
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; RUN: opt -O2 -S < %s | FileCheck %s --check-prefixes=CHECK,CHECK-02
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; RUN: opt -O3 -S < %s | FileCheck %s --check-prefixes=CHECK,CHECK-03
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; int two_shifts_by_sext(int val, char len) {
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; return (val << len) >> len;
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; }
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;
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; int two_shifts_by_same_sext(int val, char len) {
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; int wide_len = len;
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; return (val << wide_len) >> wide_len;
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; }
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;
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; void use_int32(int);
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; int two_shifts_by_sext_with_extra_use(int val, char len) {
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; use_int32(len);
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; return (val << len) >> len;
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; }
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;
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; int two_shifts_by_same_sext_with_extra_use(int val, char len) {
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; int wide_len = len;
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; use_int32(wide_len);
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; return (val << wide_len) >> wide_len;
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; }
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define i32 @two_shifts_by_sext(i32 %val, i8 signext %len) {
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; CHECK-LABEL: @two_shifts_by_sext(
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; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[LEN:%.*]] to i32
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; CHECK-NEXT: [[SHL:%.*]] = shl i32 [[VAL:%.*]], [[CONV]]
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; CHECK-NEXT: [[SHR:%.*]] = ashr i32 [[SHL]], [[CONV]]
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; CHECK-NEXT: ret i32 [[SHR]]
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;
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%val.addr = alloca i32, align 4
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%len.addr = alloca i8, align 1
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store i32 %val, i32* %val.addr, align 4
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store i8 %len, i8* %len.addr, align 1
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%val.reloaded = load i32, i32* %val.addr, align 4
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%len.reloaded.0 = load i8, i8* %len.addr, align 1
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%conv = sext i8 %len.reloaded.0 to i32
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%shl = shl i32 %val.reloaded, %conv
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%len.reloaded.1 = load i8, i8* %len.addr, align 1
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%conv1 = sext i8 %len.reloaded.1 to i32
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%shr = ashr i32 %shl, %conv1
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ret i32 %shr
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}
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define i32 @two_shifts_by_same_sext(i32 %val, i8 signext %len) {
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; CHECK-LABEL: @two_shifts_by_same_sext(
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; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[LEN:%.*]] to i32
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; CHECK-NEXT: [[SHL:%.*]] = shl i32 [[VAL:%.*]], [[CONV]]
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; CHECK-NEXT: [[SHR:%.*]] = ashr i32 [[SHL]], [[CONV]]
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; CHECK-NEXT: ret i32 [[SHR]]
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;
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%val.addr = alloca i32, align 4
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%len.addr = alloca i8, align 1
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%wide_len = alloca i32, align 4
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store i32 %val, i32* %val.addr, align 4
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store i8 %len, i8* %len.addr, align 1
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%len.reloaded.0 = load i8, i8* %len.addr, align 1
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%conv = sext i8 %len.reloaded.0 to i32
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store i32 %conv, i32* %wide_len, align 4
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%val.reloaded = load i32, i32* %val.addr, align 4
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%len.reloaded.1 = load i32, i32* %wide_len, align 4
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%shl = shl i32 %val.reloaded, %len.reloaded.1
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%len.reloaded.2 = load i32, i32* %wide_len, align 4
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%shr = ashr i32 %shl, %len.reloaded.2
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ret i32 %shr
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}
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define i32 @two_shifts_by_sext_with_extra_use(i32 %val, i8 signext %len) {
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; CHECK-LABEL: @two_shifts_by_sext_with_extra_use(
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; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[LEN:%.*]] to i32
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; CHECK-NEXT: call void @use_int32(i32 [[CONV]])
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; CHECK-NEXT: [[SHL:%.*]] = shl i32 [[VAL:%.*]], [[CONV]]
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; CHECK-NEXT: [[SHR:%.*]] = ashr i32 [[SHL]], [[CONV]]
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; CHECK-NEXT: ret i32 [[SHR]]
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;
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%val.addr = alloca i32, align 4
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%len.addr = alloca i8, align 1
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store i32 %val, i32* %val.addr, align 4
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store i8 %len, i8* %len.addr, align 1
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%len.reloaded.0 = load i8, i8* %len.addr, align 1
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%conv = sext i8 %len.reloaded.0 to i32
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call void @use_int32(i32 %conv)
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%val.reloaded = load i32, i32* %val.addr, align 4
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%len.reloaded.1 = load i8, i8* %len.addr, align 1
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%conv1 = sext i8 %len.reloaded.1 to i32
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%shl = shl i32 %val.reloaded, %conv1
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%len.reloaded.2 = load i8, i8* %len.addr, align 1
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%conv2 = sext i8 %len.reloaded.2 to i32
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%shr = ashr i32 %shl, %conv2
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ret i32 %shr
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}
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declare void @use_int32(i32)
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define i32 @two_shifts_by_same_sext_with_extra_use(i32 %val, i8 signext %len) {
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; CHECK-LABEL: @two_shifts_by_same_sext_with_extra_use(
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; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[LEN:%.*]] to i32
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; CHECK-NEXT: call void @use_int32(i32 [[CONV]])
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; CHECK-NEXT: [[SHL:%.*]] = shl i32 [[VAL:%.*]], [[CONV]]
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; CHECK-NEXT: [[SHR:%.*]] = ashr i32 [[SHL]], [[CONV]]
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; CHECK-NEXT: ret i32 [[SHR]]
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;
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%val.addr = alloca i32, align 4
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%len.addr = alloca i8, align 1
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%wide_len = alloca i32, align 4
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store i32 %val, i32* %val.addr, align 4
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store i8 %len, i8* %len.addr, align 1
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%len.reloaded.0 = load i8, i8* %len.addr, align 1
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%conv = sext i8 %len.reloaded.0 to i32
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store i32 %conv, i32* %wide_len, align 4
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%val.reloaded = load i32, i32* %wide_len, align 4
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call void @use_int32(i32 %val.reloaded)
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%len.reloaded.1 = load i32, i32* %val.addr, align 4
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%len.reloaded.2 = load i32, i32* %wide_len, align 4
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%shl = shl i32 %len.reloaded.1, %len.reloaded.2
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%wide_len.reloaded = load i32, i32* %wide_len, align 4
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%shr = ashr i32 %shl, %wide_len.reloaded
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ret i32 %shr
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}
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