[llvm-branch-commits] [clang] [Clang] Fix __builtin_clear_padding() for bitfields (PR #216063)
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llvm-branch-commits at lists.llvm.org
Thu Aug 13 08:02:11 PDT 2026
github-actions[bot] wrote:
<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results
* 90780 tests passed
* 1780 tests skipped
* 1 test failed
## Failed Tests
(click on a test name to see its output)
### Clang
<details>
<summary>Clang.CodeGen/builtin-clear-padding-codegen.c</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 2
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/24/include -nostdsysteminc -std=c11 -triple=x86_64-linux-gnu -emit-llvm -o - /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c --check-prefix=LINUX
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/24/include -nostdsysteminc -std=c11 -triple=x86_64-linux-gnu -emit-llvm -o - /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c --check-prefix=LINUX
# note: command had no output on stdout or stderr
# RUN: at line 3
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/24/include -nostdsysteminc -std=c11 -triple=x86_64-pc-windows-msvc -emit-llvm -o - /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c --check-prefix=WINDOWS
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/24/include -nostdsysteminc -std=c11 -triple=x86_64-pc-windows-msvc -emit-llvm -o - /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c --check-prefix=WINDOWS
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c:313:45: error: undefined variable: ATTR0
# | // WINDOWS-SAME: ptr noundef [[BI:%.*]]) #[[ATTR0]] {
# | ^
# | <stdin>:63:46: note: pattern attempts to capture variables: "BI"
# | define dso_local void @testBitIntByteAligned(ptr noundef %bi) #0 {
# | ^
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c:386:45: error: undefined variable: ATTR0
# | // WINDOWS-SAME: ptr noundef [[BI:%.*]]) #[[ATTR0]] {
# | ^
# | <stdin>:74:43: note: pattern attempts to capture variables: "BI"
# | define dso_local void @testVolatileBitInt(ptr noundef %bi) #0 {
# | ^
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c:1371:44: error: undefined variable: ATTR0
# | // WINDOWS-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] {
# | ^
# | <stdin>:216:46: note: pattern attempts to capture variables: "S"
# | define dso_local void @testVolatileBitfields(ptr noundef %s) #0 {
# | ^
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c:1507:44: error: undefined variable: ATTR0
# | // WINDOWS-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] {
# | ^
# | <stdin>:249:60: note: pattern attempts to capture variables: "S"
# | define dso_local void @testVolatileBitfieldsVolatileStruct(ptr noundef %s) #0 {
# | ^
# |
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin-clear-padding-codegen.c
# |
# | -dump-input=help explains the following input dump.
# |
# | Input was:
# | <<<<<<
# | .
# | .
# | .
# | 58: store i8 0, ptr %6, align 1
# | 59: ret void
# | 60: }
# | 61:
# | 62: ; Function Attrs: noinline nounwind optnone
# | 63: define dso_local void @testBitIntByteAligned(ptr noundef %bi) #0 {
# | same:313'0 { search range start (exclusive)
# | same:313'1 error: match failed for invalid pattern
# | same:313'2 undefined variable: ATTR0
# | same:313'3 pattern attempts to capture variables: "BI"
# | 64: entry:
# | 65: %bi.addr = alloca ptr, align 8
# | 66: store ptr %bi, ptr %bi.addr, align 8
# | 67: %0 = load ptr, ptr %bi.addr, align 8
# | 68: %1 = getelementptr i8, ptr %0, i32 3
# | 69: store i8 0, ptr %1, align 1
# | 70: ret void
# | 71: }
# | 72:
# | 73: ; Function Attrs: noinline nounwind optnone
# | 74: define dso_local void @testVolatileBitInt(ptr noundef %bi) #0 {
# | same:313'4 } search range end (exclusive)
# | same:386'0 { search range start (exclusive)
# | same:386'1 error: match failed for invalid pattern
# | same:386'2 undefined variable: ATTR0
# | same:386'3 pattern attempts to capture variables: "BI"
# | 75: entry:
# | 76: %bi.addr = alloca ptr, align 8
# | 77: store ptr %bi, ptr %bi.addr, align 8
# | 78: %0 = load ptr, ptr %bi.addr, align 8
# | 79: %1 = getelementptr i8, ptr %0, i32 12
# | .
# | .
# | .
# | 88: store i8 0, ptr %6, align 1
# | 89: ret void
# | 90: }
# | 91:
# | 92: ; Function Attrs: noinline nounwind optnone
# | 93: define dso_local void @testPrimitiveComplexLongDouble(ptr noundef %c) #0 {
# | same:386'4 } search range end (exclusive)
# | 94: entry:
# | 95: %c.addr = alloca ptr, align 8
# | 96: store ptr %c, ptr %c.addr, align 8
# | 97: %0 = load ptr, ptr %c.addr, align 8
# | 98: ret void
# | .
# | .
# | .
# | 211: store i8 %3, ptr %1, align 1
# | 212: ret void
# | 213: }
# | 214:
# | 215: ; Function Attrs: noinline nounwind optnone
# | 216: define dso_local void @testVolatileBitfields(ptr noundef %s) #0 {
# | same:1371'0 { search range start (exclusive)
# | same:1371'1 error: match failed for invalid pattern
# | same:1371'2 undefined variable: ATTR0
# | same:1371'3 pattern attempts to capture variables: "S"
# | 217: entry:
# | 218: %s.addr = alloca ptr, align 8
# | 219: store ptr %s, ptr %s.addr, align 8
# | 220: %0 = load ptr, ptr %s.addr, align 8
# | 221: %1 = getelementptr i8, ptr %0, i32 0
# | .
# | .
# | .
# | 244: store i8 %15, ptr %13, align 1
# | 245: ret void
# | 246: }
# | 247:
# | 248: ; Function Attrs: noinline nounwind optnone
# | 249: define dso_local void @testVolatileBitfieldsVolatileStruct(ptr noundef %s) #0 {
# | same:1371'4 } search range end (exclusive)
# | same:1507'0 { search range start (exclusive)
# | same:1507'1 error: match failed for invalid pattern
# | same:1507'2 undefined variable: ATTR0
# | same:1507'3 pattern attempts to capture variables: "S"
# | 250: entry:
# | 251: %s.addr = alloca ptr, align 8
# | 252: store ptr %s, ptr %s.addr, align 8
# | 253: %0 = load ptr, ptr %s.addr, align 8
# | 254: %1 = getelementptr i8, ptr %0, i32 0
# | .
# | .
# | .
# | 277: store i8 %15, ptr %13, align 1
# | 278: ret void
# | 279: }
# | 280:
# | 281: ; Function Attrs: noinline nounwind optnone
# | 282: define dso_local void @testArrayNoPadding() #0 {
# | same:1507'4 } search range end (exclusive)
# | 283: entry:
# | 284: %i = alloca [4 x i32], align 4
# | 285: ret void
# | 286: }
# | 287:
# | .
# | .
# | .
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.
https://github.com/llvm/llvm-project/pull/216063
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