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| 1 | +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 |
| 2 | +; RUN: opt -S -passes='require<profile-summary>,function(codegenprepare)' -mtriple=x86_64-unknown-unknown < %s | FileCheck %s |
| 3 | + |
| 4 | +; Make sure the nsw flag is dropped when the load ext is combined. |
| 5 | +define i32 @simplify_load_ext_drop_trunc_nsw(ptr %p) { |
| 6 | +; CHECK-LABEL: define i32 @simplify_load_ext_drop_trunc_nsw( |
| 7 | +; CHECK-SAME: ptr [[P:%.*]]) { |
| 8 | +; CHECK-NEXT: [[ENTRY:.*:]] |
| 9 | +; CHECK-NEXT: [[X:%.*]] = load i32, ptr [[P]], align 4 |
| 10 | +; CHECK-NEXT: [[TMP0:%.*]] = and i32 [[X]], 255 |
| 11 | +; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 [[TMP0]] to i8 |
| 12 | +; CHECK-NEXT: [[EXT1:%.*]] = sext i8 [[TRUNC]] to i16 |
| 13 | +; CHECK-NEXT: call void @use(i32 [[TMP0]]) |
| 14 | +; CHECK-NEXT: [[EXT2:%.*]] = zext i16 [[EXT1]] to i32 |
| 15 | +; CHECK-NEXT: ret i32 [[EXT2]] |
| 16 | +; |
| 17 | +entry: |
| 18 | + %x = load i32, ptr %p, align 4 |
| 19 | + %trunc = trunc nsw i32 %x to i8 |
| 20 | + %ext1 = sext i8 %trunc to i16 |
| 21 | + %conv2 = and i32 %x, 255 |
| 22 | + call void @use(i32 %conv2) |
| 23 | + %ext2 = zext i16 %ext1 to i32 |
| 24 | + ret i32 %ext2 |
| 25 | +} |
| 26 | + |
| 27 | +; Make sure the nsw flag is dropped when the load ext is combined. |
| 28 | +define i32 @simplify_load_ext_drop_shl_nsw(ptr %p) { |
| 29 | +; CHECK-LABEL: define i32 @simplify_load_ext_drop_shl_nsw( |
| 30 | +; CHECK-SAME: ptr [[P:%.*]]) { |
| 31 | +; CHECK-NEXT: [[ENTRY:.*:]] |
| 32 | +; CHECK-NEXT: [[X:%.*]] = load i32, ptr [[P]], align 4 |
| 33 | +; CHECK-NEXT: [[TMP0:%.*]] = and i32 [[X]], 255 |
| 34 | +; CHECK-NEXT: [[SHL:%.*]] = shl i32 [[TMP0]], 24 |
| 35 | +; CHECK-NEXT: call void @use(i32 [[TMP0]]) |
| 36 | +; CHECK-NEXT: ret i32 [[SHL]] |
| 37 | +; |
| 38 | +entry: |
| 39 | + %x = load i32, ptr %p, align 4 |
| 40 | + %shl = shl nsw i32 %x, 24 |
| 41 | + %conv2 = and i32 %x, 255 |
| 42 | + call void @use(i32 %conv2) |
| 43 | + ret i32 %shl |
| 44 | +} |
| 45 | + |
| 46 | +define i32 @simplify_load_ext_keep_trunc_nuw(ptr %p) { |
| 47 | +; CHECK-LABEL: define i32 @simplify_load_ext_keep_trunc_nuw( |
| 48 | +; CHECK-SAME: ptr [[P:%.*]]) { |
| 49 | +; CHECK-NEXT: [[ENTRY:.*:]] |
| 50 | +; CHECK-NEXT: [[X:%.*]] = load i32, ptr [[P]], align 4 |
| 51 | +; CHECK-NEXT: [[TMP0:%.*]] = and i32 [[X]], 255 |
| 52 | +; CHECK-NEXT: [[TRUNC:%.*]] = trunc nuw i32 [[TMP0]] to i8 |
| 53 | +; CHECK-NEXT: [[EXT1:%.*]] = sext i8 [[TRUNC]] to i16 |
| 54 | +; CHECK-NEXT: call void @use(i32 [[TMP0]]) |
| 55 | +; CHECK-NEXT: [[EXT2:%.*]] = zext i16 [[EXT1]] to i32 |
| 56 | +; CHECK-NEXT: ret i32 [[EXT2]] |
| 57 | +; |
| 58 | +entry: |
| 59 | + %x = load i32, ptr %p, align 4 |
| 60 | + %trunc = trunc nuw i32 %x to i8 |
| 61 | + %ext1 = sext i8 %trunc to i16 |
| 62 | + %conv2 = and i32 %x, 255 |
| 63 | + call void @use(i32 %conv2) |
| 64 | + %ext2 = zext i16 %ext1 to i32 |
| 65 | + ret i32 %ext2 |
| 66 | +} |
| 67 | + |
| 68 | +define i32 @simplify_load_ext_drop_shl_nuw(ptr %p) { |
| 69 | +; CHECK-LABEL: define i32 @simplify_load_ext_drop_shl_nuw( |
| 70 | +; CHECK-SAME: ptr [[P:%.*]]) { |
| 71 | +; CHECK-NEXT: [[ENTRY:.*:]] |
| 72 | +; CHECK-NEXT: [[X:%.*]] = load i32, ptr [[P]], align 4 |
| 73 | +; CHECK-NEXT: [[TMP0:%.*]] = and i32 [[X]], 255 |
| 74 | +; CHECK-NEXT: [[SHL:%.*]] = shl nuw i32 [[TMP0]], 24 |
| 75 | +; CHECK-NEXT: call void @use(i32 [[TMP0]]) |
| 76 | +; CHECK-NEXT: ret i32 [[SHL]] |
| 77 | +; |
| 78 | +entry: |
| 79 | + %x = load i32, ptr %p, align 4 |
| 80 | + %shl = shl nuw i32 %x, 24 |
| 81 | + %conv2 = and i32 %x, 255 |
| 82 | + call void @use(i32 %conv2) |
| 83 | + ret i32 %shl |
| 84 | +} |
| 85 | + |
| 86 | +declare void @use(i32) |
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