1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature 2; RUN: opt < %s -passes=ipsccp -S -o - | FileCheck %s 3 4; The original C source looked like this: 5; 6; long long a101, b101, e101; 7; volatile long c101; 8; int d101; 9; 10; static inline int bar(p1, p2) 11; { 12; return 0; 13; } 14; 15; void foo(unsigned p1) 16; { 17; long long *f = &b101, *g = &e101; 18; c101 = 0; 19; (void)((*f |= a101) - (*g = bar(d101))); 20; c101 = (*f |= a101 &= p1) == d101; 21; } 22; 23; When compiled with Clang it gives a warning 24; warning: too few arguments in call to 'bar' 25; 26; This ll reproducer has been reduced to only include tha call. 27; 28; Note that -lint will report this as UB, but it passes -verify. 29 30; This test is just to verify that we do not crash/assert due to mismatch in 31; argument count between the caller and callee. 32 33define dso_local void @foo(i16 %a) { 34; CHECK-LABEL: define {{[^@]+}}@foo 35; CHECK-SAME: (i16 [[A:%.*]]) { 36; CHECK-NEXT: [[CALL:%.*]] = call i16 @bar(i16 [[A]]) 37; CHECK-NEXT: ret void 38; 39 %call = call i16 @bar(i16 %a) 40 ret void 41} 42 43define internal i16 @bar(i16 %p1, i16 %p2) { 44; CHECK-LABEL: define {{[^@]+}}@bar 45; CHECK-SAME: (i16 [[P1:%.*]], i16 [[P2:%.*]]) { 46; CHECK-NEXT: ret i16 0 47; 48 ret i16 0 49} 50 51;------------------------------------------------------------------------------- 52; Additional tests to verify that we still optimize when having a mismatch 53; in argument count due to varargs (as long as all non-variadic arguments have 54; been provided), 55 56define internal i16 @vararg_prop(i16 %p1, ...) { 57; CHECK-LABEL: define {{[^@]+}}@vararg_prop 58; CHECK-SAME: (i16 [[P1:%.*]], ...) { 59; CHECK-NEXT: ret i16 poison 60; 61 ret i16 %p1 62} 63 64define dso_local i16 @vararg_tests(i16 %a) { 65; CHECK-LABEL: define {{[^@]+}}@vararg_tests 66; CHECK-SAME: (i16 [[A:%.*]]) { 67; CHECK-NEXT: [[CALL1:%.*]] = call i16 (i16, ...) @vararg_prop(i16 7, i16 8, i16 [[A]]) 68; CHECK-NEXT: [[CALL2:%.*]] = call i16 @vararg_no_prop(i16 7) 69; CHECK-NEXT: [[ADD:%.*]] = add i16 7, [[CALL2]] 70; CHECK-NEXT: ret i16 [[ADD]] 71; 72 %call1 = call i16 (i16, ...) @vararg_prop(i16 7, i16 8, i16 %a) 73 %call2 = call i16 @vararg_no_prop (i16 7) 74 %add = add i16 %call1, %call2 75 ret i16 %add 76} 77 78define internal i16 @vararg_no_prop(i16 %p1, i16 %p2, ...) { 79; CHECK-LABEL: define {{[^@]+}}@vararg_no_prop 80; CHECK-SAME: (i16 [[P1:%.*]], i16 [[P2:%.*]], ...) { 81; CHECK-NEXT: ret i16 [[P1]] 82; 83 ret i16 %p1 84} 85 86