diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/malloc-free-delete.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/malloc-free-delete.ll | 288 |
1 files changed, 0 insertions, 288 deletions
diff --git a/llvm/test/Transforms/InstCombine/malloc-free-delete.ll b/llvm/test/Transforms/InstCombine/malloc-free-delete.ll deleted file mode 100644 index 7e7b6d9aee5..00000000000 --- a/llvm/test/Transforms/InstCombine/malloc-free-delete.ll +++ /dev/null @@ -1,288 +0,0 @@ -; RUN: opt < %s -instcombine -S | FileCheck %s -; PR1201 -define i32 @main(i32 %argc, i8** %argv) { -; CHECK-LABEL: @main( - %c_19 = alloca i8* - %malloc_206 = tail call i8* @malloc(i32 mul (i32 ptrtoint (i8* getelementptr (i8, i8* null, i32 1) to i32), i32 10)) - store i8* %malloc_206, i8** %c_19 - %tmp_207 = load i8*, i8** %c_19 - tail call void @free(i8* %tmp_207) - ret i32 0 -; CHECK-NEXT: ret i32 0 -} - -declare noalias i8* @calloc(i32, i32) nounwind -declare noalias i8* @malloc(i32) -declare void @free(i8*) - -define i1 @foo() { -; CHECK-LABEL: @foo( -; CHECK-NEXT: ret i1 false - %m = call i8* @malloc(i32 1) - %z = icmp eq i8* %m, null - call void @free(i8* %m) - ret i1 %z -} - -declare void @llvm.lifetime.start.p0i8(i64, i8*) -declare void @llvm.lifetime.end.p0i8(i64, i8*) -declare i64 @llvm.objectsize.i64(i8*, i1) -declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind -declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind -declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1) nounwind - -define void @test3(i8* %src) { -; CHECK-LABEL: @test3( -; CHECK-NEXT: ret void - %a = call noalias i8* @malloc(i32 10) - call void @llvm.lifetime.start.p0i8(i64 10, i8* %a) - call void @llvm.lifetime.end.p0i8(i64 10, i8* %a) - %size = call i64 @llvm.objectsize.i64(i8* %a, i1 true) - store i8 42, i8* %a - call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %src, i32 32, i1 false) - call void @llvm.memmove.p0i8.p0i8.i32(i8* %a, i8* %src, i32 32, i1 false) - call void @llvm.memset.p0i8.i32(i8* %a, i8 5, i32 32, i1 false) - %alloc2 = call noalias i8* @calloc(i32 5, i32 7) nounwind - %z = icmp ne i8* %alloc2, null - ret void -} - -;; This used to crash. -define void @test4() { -; CHECK-LABEL: @test4( -; CHECK-NEXT: ret void - %A = call i8* @malloc(i32 16000) - %B = bitcast i8* %A to double* - %C = bitcast double* %B to i8* - call void @free(i8* %C) - ret void -} - -; CHECK-LABEL: @test5( -define void @test5(i8* %ptr, i8** %esc) { -; CHECK-NEXT: call i8* @malloc -; CHECK-NEXT: call i8* @malloc -; CHECK-NEXT: call i8* @malloc -; CHECK-NEXT: call i8* @malloc -; CHECK-NEXT: call i8* @malloc -; CHECK-NEXT: call i8* @malloc -; CHECK-NEXT: call i8* @malloc -; CHECK-NEXT: call void @llvm.memcpy -; CHECK-NEXT: call void @llvm.memmove -; CHECK-NEXT: store -; CHECK-NEXT: call void @llvm.memcpy -; CHECK-NEXT: call void @llvm.memmove -; CHECK-NEXT: call void @llvm.memset -; CHECK-NEXT: store volatile -; CHECK-NEXT: ret - %a = call i8* @malloc(i32 700) - %b = call i8* @malloc(i32 700) - %c = call i8* @malloc(i32 700) - %d = call i8* @malloc(i32 700) - %e = call i8* @malloc(i32 700) - %f = call i8* @malloc(i32 700) - %g = call i8* @malloc(i32 700) - call void @llvm.memcpy.p0i8.p0i8.i32(i8* %ptr, i8* %a, i32 32, i1 false) - call void @llvm.memmove.p0i8.p0i8.i32(i8* %ptr, i8* %b, i32 32, i1 false) - store i8* %c, i8** %esc - call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %ptr, i32 32, i1 true) - call void @llvm.memmove.p0i8.p0i8.i32(i8* %e, i8* %ptr, i32 32, i1 true) - call void @llvm.memset.p0i8.i32(i8* %f, i8 5, i32 32, i1 true) - store volatile i8 4, i8* %g - ret void -} - -;; When a basic block contains only a call to free and this block is accessed -;; through a test of the argument of free against null, move the call in the -;; predecessor block. -;; Using simplifycfg will remove the empty basic block and the branch operation -;; Then, performing a dead elimination will remove the comparison. -;; This is what happens with -O1 and upper. -; CHECK-LABEL: @test6( -define void @test6(i8* %foo) minsize { -; CHECK: %tobool = icmp eq i8* %foo, null -;; Call to free moved -; CHECK-NEXT: tail call void @free(i8* %foo) -; CHECK-NEXT: br i1 %tobool, label %if.end, label %if.then -; CHECK: if.then: -;; Block is now empty and may be simplified by simplifycfg -; CHECK-NEXT: br label %if.end -; CHECK: if.end: -; CHECK-NEXT: ret void -entry: - %tobool = icmp eq i8* %foo, null - br i1 %tobool, label %if.end, label %if.then - -if.then: ; preds = %entry - tail call void @free(i8* %foo) - br label %if.end - -if.end: ; preds = %entry, %if.then - ret void -} - -declare i8* @_ZnwmRKSt9nothrow_t(i64, i8*) nobuiltin -declare void @_ZdlPvRKSt9nothrow_t(i8*, i8*) nobuiltin -declare i32 @__gxx_personality_v0(...) -declare void @_ZN1AC2Ev(i8* %this) - -; CHECK-LABEL: @test7( -define void @test7() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) { -entry: - %nt = alloca i8 - ; CHECK-NOT: call {{.*}}@_ZnwmRKSt9nothrow_t( - %call.i = tail call i8* @_ZnwmRKSt9nothrow_t(i64 1, i8* %nt) builtin nounwind - invoke void @_ZN1AC2Ev(i8* undef) - to label %.noexc.i unwind label %lpad.i - -.noexc.i: ; preds = %entry - unreachable - -lpad.i: ; preds = %entry - %0 = landingpad { i8*, i32 } cleanup - ; CHECK-NOT: call {{.*}}@_ZdlPvRKSt9nothrow_t( - call void @_ZdlPvRKSt9nothrow_t(i8* %call.i, i8* %nt) builtin nounwind - resume { i8*, i32 } %0 -} - -declare i8* @_Znwm(i64) nobuiltin -define i8* @_Znwj(i32 %n) nobuiltin { - %z = zext i32 %n to i64 - %m = call i8* @_Znwm(i64 %z) - ret i8* %m -} -declare i8* @_Znam(i64) nobuiltin -declare i8* @_Znaj(i32) nobuiltin -declare void @_ZdlPv(i8*) nobuiltin -declare void @_ZdaPv(i8*) nobuiltin - -define linkonce void @_ZdlPvm(i8* %p, i64) nobuiltin { - call void @_ZdlPv(i8* %p) - ret void -} -define linkonce void @_ZdlPvj(i8* %p, i32) nobuiltin { - call void @_ZdlPv(i8* %p) - ret void -} -define linkonce void @_ZdaPvm(i8* %p, i64) nobuiltin { - call void @_ZdaPv(i8* %p) - ret void -} -define linkonce void @_ZdaPvj(i8* %p, i32) nobuiltin { - call void @_ZdaPv(i8* %p) - ret void -} - - -; new(size_t, align_val_t) -declare i8* @_ZnwmSt11align_val_t(i64, i64) nobuiltin -declare i8* @_ZnwjSt11align_val_t(i32, i32) nobuiltin -; new[](size_t, align_val_t) -declare i8* @_ZnamSt11align_val_t(i64, i64) nobuiltin -declare i8* @_ZnajSt11align_val_t(i32, i32) nobuiltin -; new(size_t, align_val_t, nothrow) -declare i8* @_ZnwmSt11align_val_tRKSt9nothrow_t(i64, i64, i8*) nobuiltin -declare i8* @_ZnwjSt11align_val_tRKSt9nothrow_t(i32, i32, i8*) nobuiltin -; new[](size_t, align_val_t, nothrow) -declare i8* @_ZnamSt11align_val_tRKSt9nothrow_t(i64, i64, i8*) nobuiltin -declare i8* @_ZnajSt11align_val_tRKSt9nothrow_t(i32, i32, i8*) nobuiltin -; delete(void*, align_val_t) -declare void @_ZdlPvSt11align_val_t(i8*, i64) nobuiltin -; delete[](void*, align_val_t) -declare void @_ZdaPvSt11align_val_t(i8*, i64) nobuiltin -; delete(void*, align_val_t, nothrow) -declare void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8*, i64, i8*) nobuiltin -; delete[](void*, align_val_t, nothrow) -declare void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8*, i64, i8*) nobuiltin - - -; CHECK-LABEL: @test8( -define void @test8() { - ; CHECK-NOT: call - %nt = alloca i8 - %nw = call i8* @_Znwm(i64 32) builtin - call void @_ZdlPv(i8* %nw) builtin - %na = call i8* @_Znam(i64 32) builtin - call void @_ZdaPv(i8* %na) builtin - %nwm = call i8* @_Znwm(i64 32) builtin - call void @_ZdlPvm(i8* %nwm, i64 32) builtin - %nwj = call i8* @_Znwj(i32 32) builtin - call void @_ZdlPvj(i8* %nwj, i32 32) builtin - %nam = call i8* @_Znam(i64 32) builtin - call void @_ZdaPvm(i8* %nam, i64 32) builtin - %naj = call i8* @_Znaj(i32 32) builtin - call void @_ZdaPvj(i8* %naj, i32 32) builtin - %nwa = call i8* @_ZnwmSt11align_val_t(i64 32, i64 8) builtin - call void @_ZdlPvSt11align_val_t(i8* %nwa, i64 8) builtin - %naa = call i8* @_ZnamSt11align_val_t(i64 32, i64 8) builtin - call void @_ZdaPvSt11align_val_t(i8* %naa, i64 8) builtin - %nwja = call i8* @_ZnwjSt11align_val_t(i32 32, i32 8) builtin - call void @_ZdlPvSt11align_val_t(i8* %nwja, i64 8) builtin - %naja = call i8* @_ZnajSt11align_val_t(i32 32, i32 8) builtin - call void @_ZdaPvSt11align_val_t(i8* %naja, i64 8) builtin - %nwat = call i8* @_ZnwmSt11align_val_tRKSt9nothrow_t(i64 32, i64 8, i8* %nt) builtin - call void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8* %nwat, i64 8, i8* %nt) builtin - %naat = call i8* @_ZnamSt11align_val_tRKSt9nothrow_t(i64 32, i64 8, i8* %nt) builtin - call void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8* %naat, i64 8, i8* %nt) builtin - %nwjat = call i8* @_ZnwjSt11align_val_tRKSt9nothrow_t(i32 32, i32 8, i8* %nt) builtin - call void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8* %nwjat, i64 8, i8* %nt) builtin - %najat = call i8* @_ZnajSt11align_val_tRKSt9nothrow_t(i32 32, i32 8, i8* %nt) builtin - call void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8* %najat, i64 8, i8* %nt) builtin - ret void -} - -declare noalias i8* @"\01??2@YAPEAX_K@Z"(i64) nobuiltin -declare void @"\01??3@YAXPEAX@Z"(i8*) nobuiltin - -; CHECK-LABEL: @test9( -define void @test9() { - ; CHECK-NOT: call - %new_long_long = call noalias i8* @"\01??2@YAPEAX_K@Z"(i64 32) builtin - call void @"\01??3@YAXPEAX@Z"(i8* %new_long_long) builtin - ret void -} - -define void @test10() { -; CHECK-LABEL: @test10 -; CHECK: call void @_ZdlPv - call void @_ZdlPv(i8* null) - ret void -} - -define void @test11() { -; CHECK-LABEL: @test11 -; CHECK: call i8* @_Znwm -; CHECK: call void @_ZdlPv - %call = call i8* @_Znwm(i64 8) builtin - call void @_ZdlPv(i8* %call) - ret void -} - -;; Check that the optimization that moves a call to free in its predecessor -;; block (see test6) also happens when noop casts are involved. -; CHECK-LABEL: @test12( -define void @test12(i32* %foo) minsize { -; CHECK: %tobool = icmp eq i32* %foo, null -;; Everything before the call to free should have been moved as well. -; CHECK-NEXT: %bitcast = bitcast i32* %foo to i8* -;; Call to free moved -; CHECK-NEXT: tail call void @free(i8* %bitcast) -; CHECK-NEXT: br i1 %tobool, label %if.end, label %if.then -; CHECK: if.then: -;; Block is now empty and may be simplified by simplifycfg -; CHECK-NEXT: br label %if.end -; CHECK: if.end: -; CHECK-NEXT: ret void -entry: - %tobool = icmp eq i32* %foo, null - br i1 %tobool, label %if.end, label %if.then - -if.then: ; preds = %entry - %bitcast = bitcast i32* %foo to i8* - tail call void @free(i8* %bitcast) - br label %if.end - -if.end: ; preds = %entry, %if.then - ret void -} - |
