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...opt -lint < test/Transforms/InstCombine/call.ll Undefined behavior: Call argument type mismatches callee parameter type call void bitcast (void (i8*)* @test1a to void (i32*)*)(i32* %A) Undefined behavior: Call argument type mismatches callee parameter type call void bitcast (void (i8)* @test2a to void (i32)*)(i32 %A) Undefined behavior: Call return type mismatches callee return type %X = call i32 bitcast (i8 ()* @test4a to i32 ()*)() Undefined behavior: Call argument count mismatches callee argument count %X = call i32 bitcast (i32 (i32)* @test6a to i32 ()*)() Undefined behavior:...

Hello, This is an interesting example. Whenever I see strange things like this, I use opt's -lint. In this case, opt -lint reports: Undefined behavior: Call return type mismatches callee return type %call = call float @alias_f32(float %tmp2) #1 You'll get a similar report when the parameter types mismatch. Pete On Wed, May 29, 2013 at 5:40 PM, Arsenault, Matthew <

Hi, I'm not sure what the expected behavior of calling a bitcasted function is. Suppose you have a case like this (which you get on the source level from attribute alias): @alias_f32 = alias bitcast (i32 (i32)* @func_i32 to float (float)*) define internal i32 @func_i32(i32 %v) noinline nounwind { entry: ret i32 %v } define void @bitcast_alias_scalar(float* noalias %source, float* noalias

...0 + %0 = load i8** %a.addr, align 8 + %call = call i8* @strcpy(i8* %arraydecay, i8* %0) + %arraydecay1 = getelementptr inbounds [16 x i8]* %buf, i32 0, i32 0 + %call2 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([4 x i8]* @.str, i32 0, i32 0), i8* %arraydecay1) + ret void +} + +; test2a: struct { [16 x i8] } +; no safestack attribute +; Requires no protector. +define void @test2a(i8* %a) nounwind uwtable { +entry: +; LINUX-I386: test2a: +; LINUX-I386-NOT: movl __llvm__unsafe_stack_ptr +; LINUX-I386: .cfi_endproc + +; LINUX-X64: test2a: +; LINUX-X64-NOT: movq %fs:640 +; LIN...