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049c58c3a2
When a landing pad is calculated in a program that is compiled for micromips, it will point to an even address. Such an error will cause a segmentation fault, as the instructions in micromips are aligned on odd addresses. This patch sets the last bit of the offset where a landing pad is, to 1, which will effectively be an odd address and point to the instruction exactly. Differential Revision: https://reviews.llvm.org/D52985 llvm-svn: 344591
38 lines
1.2 KiB
LLVM
38 lines
1.2 KiB
LLVM
; RUN: llc -mtriple=mips-linux-gnu -mcpu=mips32r2 -mattr=+micromips -O3 -filetype=obj < %s | llvm-objdump -s -j .gcc_except_table - | FileCheck %s
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; CHECK: Contents of section .gcc_except_table:
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; CHECK-NEXT: 0000 ff9b1501 0c011100 00110e1f 011f1800
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; CHECK-NEXT: 0010 00010000 00000000
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@_ZTIi = external constant i8*
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define dso_local i32 @main() local_unnamed_addr norecurse personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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%exception.i = tail call i8* @__cxa_allocate_exception(i32 4) nounwind
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%0 = bitcast i8* %exception.i to i32*
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store i32 5, i32* %0, align 16
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invoke void @__cxa_throw(i8* %exception.i, i8* bitcast (i8** @_ZTIi to i8*), i8* null) noreturn
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to label %.noexc unwind label %return
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.noexc:
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unreachable
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return:
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%1 = landingpad { i8*, i32 }
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catch i8* null
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%2 = extractvalue { i8*, i32 } %1, 0
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%3 = tail call i8* @__cxa_begin_catch(i8* %2) nounwind
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tail call void @__cxa_end_catch()
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ret i32 0
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}
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declare i32 @__gxx_personality_v0(...)
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declare i8* @__cxa_begin_catch(i8*) local_unnamed_addr
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declare void @__cxa_end_catch() local_unnamed_addr
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declare i8* @__cxa_allocate_exception(i32) local_unnamed_addr
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declare void @__cxa_throw(i8*, i8*, i8*) local_unnamed_addr
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