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llvm-mirror/test/CodeGen/WinEH/seh-simple.ll

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Use WinEHPrepare to outline SEH finally blocks No outlining is necessary for SEH catch blocks. Use the blockaddr of the handler in place of the usual outlined function. Reviewers: majnemer, andrew.w.kaylor Differential Revision: http://reviews.llvm.org/D8370 llvm-svn: 232664
2015-03-18 21:26:53 +01:00
; RUN: opt -S -winehprepare -sehprepare -mtriple=x86_64-windows-msvc < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
declare void @cleanup()
declare i32 @filt()
declare void @might_crash()
declare i32 @__C_specific_handler(...)
declare i32 @llvm.eh.typeid.for(i8*)
define i32 @simple_except_store() {
entry:
%retval = alloca i32
store i32 0, i32* %retval
invoke void @might_crash()
to label %return unwind label %lpad
lpad:
%ehvals = landingpad { i8*, i32 } personality i32 (...)* @__C_specific_handler
catch i32 ()* @filt
%sel = extractvalue { i8*, i32 } %ehvals, 1
%filt_sel = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @filt to i8*))
%matches = icmp eq i32 %sel, %filt_sel
br i1 %matches, label %__except, label %eh.resume
__except:
store i32 1, i32* %retval
br label %return
return:
%r = load i32, i32* %retval
ret i32 %r
eh.resume:
resume { i8*, i32 } %ehvals
}
; CHECK-LABEL: define i32 @simple_except_store()
; CHECK: landingpad { i8*, i32 }
; CHECK-NEXT: catch i32 ()* @filt
[WinEH] Make llvm.eh.actions use frameescape indices for catch params This makes it possible to use the same representation of llvm.eh.actions in outlined handlers as we use in the parent function because i32's are just constants that can be copied freely between functions. I had to add a sentinel alloca to the list of child allocas so that we don't try to sink the catch object into the handler. Normally, one would use nullptr for this kind of thing, but TinyPtrVector doesn't support null elements. More than that, it's elements have to have a suitable alignment. Therefore, I settled on this for my sentinel: AllocaInst *getCatchObjectSentinel() { return static_cast<AllocaInst *>(nullptr) + 1; } llvm-svn: 233947
2015-04-02 23:13:31 +02:00
; CHECK-NEXT: call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (i32 ()* @filt to i8*), i32 -1, i8* blockaddress(@simple_except_store, %__except))
Use WinEHPrepare to outline SEH finally blocks No outlining is necessary for SEH catch blocks. Use the blockaddr of the handler in place of the usual outlined function. Reviewers: majnemer, andrew.w.kaylor Differential Revision: http://reviews.llvm.org/D8370 llvm-svn: 232664
2015-03-18 21:26:53 +01:00
; CHECK-NEXT: indirectbr {{.*}} [label %__except]
define i32 @catch_all() {
entry:
%retval = alloca i32
store i32 0, i32* %retval
invoke void @might_crash()
to label %return unwind label %lpad
lpad:
%ehvals = landingpad { i8*, i32 } personality i32 (...)* @__C_specific_handler
catch i8* null
store i32 1, i32* %retval
br label %return
return:
%r = load i32, i32* %retval
ret i32 %r
}
; CHECK-LABEL: define i32 @catch_all()
; CHECK: landingpad { i8*, i32 }
; CHECK-NEXT: catch i8* null
[WinEH] Make llvm.eh.actions use frameescape indices for catch params This makes it possible to use the same representation of llvm.eh.actions in outlined handlers as we use in the parent function because i32's are just constants that can be copied freely between functions. I had to add a sentinel alloca to the list of child allocas so that we don't try to sink the catch object into the handler. Normally, one would use nullptr for this kind of thing, but TinyPtrVector doesn't support null elements. More than that, it's elements have to have a suitable alignment. Therefore, I settled on this for my sentinel: AllocaInst *getCatchObjectSentinel() { return static_cast<AllocaInst *>(nullptr) + 1; } llvm-svn: 233947
2015-04-02 23:13:31 +02:00
; CHECK-NEXT: call i8* (...)* @llvm.eh.actions(i32 1, i8* null, i32 -1, i8* blockaddress(@catch_all, %catch.all))
Use WinEHPrepare to outline SEH finally blocks No outlining is necessary for SEH catch blocks. Use the blockaddr of the handler in place of the usual outlined function. Reviewers: majnemer, andrew.w.kaylor Differential Revision: http://reviews.llvm.org/D8370 llvm-svn: 232664
2015-03-18 21:26:53 +01:00
; CHECK-NEXT: indirectbr {{.*}} [label %catch.all]
;
; CHECK: catch.all:
; CHECK: store i32 1, i32* %retval
define i32 @except_phi() {
entry:
invoke void @might_crash()
to label %return unwind label %lpad
lpad:
%ehvals = landingpad { i8*, i32 } personality i32 (...)* @__C_specific_handler
catch i32 ()* @filt
%sel = extractvalue { i8*, i32 } %ehvals, 1
%filt_sel = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @filt to i8*))
%matches = icmp eq i32 %sel, %filt_sel
br i1 %matches, label %return, label %eh.resume
return:
%r = phi i32 [0, %entry], [1, %lpad]
ret i32 %r
eh.resume:
resume { i8*, i32 } %ehvals
}
; CHECK-LABEL: define i32 @except_phi()
; CHECK: landingpad { i8*, i32 }
; CHECK-NEXT: catch i32 ()* @filt
[WinEH] Make llvm.eh.actions use frameescape indices for catch params This makes it possible to use the same representation of llvm.eh.actions in outlined handlers as we use in the parent function because i32's are just constants that can be copied freely between functions. I had to add a sentinel alloca to the list of child allocas so that we don't try to sink the catch object into the handler. Normally, one would use nullptr for this kind of thing, but TinyPtrVector doesn't support null elements. More than that, it's elements have to have a suitable alignment. Therefore, I settled on this for my sentinel: AllocaInst *getCatchObjectSentinel() { return static_cast<AllocaInst *>(nullptr) + 1; } llvm-svn: 233947
2015-04-02 23:13:31 +02:00
; CHECK-NEXT: call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (i32 ()* @filt to i8*), i32 -1, i8* blockaddress(@except_phi, %return))
Use WinEHPrepare to outline SEH finally blocks No outlining is necessary for SEH catch blocks. Use the blockaddr of the handler in place of the usual outlined function. Reviewers: majnemer, andrew.w.kaylor Differential Revision: http://reviews.llvm.org/D8370 llvm-svn: 232664
2015-03-18 21:26:53 +01:00
; CHECK-NEXT: indirectbr {{.*}} [label %return]
;
; CHECK: return:
; CHECK-NEXT: %r = phi i32 [ 0, %entry ], [ 1, %lpad1 ]
; CHECK-NEXT: ret i32 %r
define i32 @cleanup_and_except() {
entry:
invoke void @might_crash()
to label %return unwind label %lpad
lpad:
%ehvals = landingpad { i8*, i32 } personality i32 (...)* @__C_specific_handler
cleanup
catch i32 ()* @filt
call void @cleanup()
%sel = extractvalue { i8*, i32 } %ehvals, 1
%filt_sel = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @filt to i8*))
%matches = icmp eq i32 %sel, %filt_sel
br i1 %matches, label %return, label %eh.resume
return:
%r = phi i32 [0, %entry], [1, %lpad]
ret i32 %r
eh.resume:
resume { i8*, i32 } %ehvals
}
; CHECK-LABEL: define i32 @cleanup_and_except()
; CHECK: landingpad { i8*, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: catch i32 ()* @filt
; CHECK-NEXT: call i8* (...)* @llvm.eh.actions(
WinEH: Make llvm.eh.actions emission match the EH docs This switches the sense of the i32 values and updates the test cases. We can also use CHECK-SAME to clean up some tests, and reduce the visual noise from bitcasts. llvm-svn: 232774
2015-03-19 23:31:02 +01:00
; CHECK: i32 0, void (i8*, i8*)* @cleanup_and_except.cleanup,
[WinEH] Make llvm.eh.actions use frameescape indices for catch params This makes it possible to use the same representation of llvm.eh.actions in outlined handlers as we use in the parent function because i32's are just constants that can be copied freely between functions. I had to add a sentinel alloca to the list of child allocas so that we don't try to sink the catch object into the handler. Normally, one would use nullptr for this kind of thing, but TinyPtrVector doesn't support null elements. More than that, it's elements have to have a suitable alignment. Therefore, I settled on this for my sentinel: AllocaInst *getCatchObjectSentinel() { return static_cast<AllocaInst *>(nullptr) + 1; } llvm-svn: 233947
2015-04-02 23:13:31 +02:00
; CHECK: i32 1, i8* bitcast (i32 ()* @filt to i8*), i32 -1, i8* blockaddress(@cleanup_and_except, %return))
Use WinEHPrepare to outline SEH finally blocks No outlining is necessary for SEH catch blocks. Use the blockaddr of the handler in place of the usual outlined function. Reviewers: majnemer, andrew.w.kaylor Differential Revision: http://reviews.llvm.org/D8370 llvm-svn: 232664
2015-03-18 21:26:53 +01:00
; CHECK-NEXT: indirectbr {{.*}} [label %return]
;
; CHECK: return:
; CHECK-NEXT: %r = phi i32 [ 0, %entry ], [ 1, %lpad1 ]
; CHECK-NEXT: ret i32 %r
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