1; RUN: llc < %s -mtriple=i686-unknown-linux-gnu | FileCheck %s -check-prefix=X86 2; RUN: llc < %s -mtriple=x86_64-apple-darwin10 | FileCheck %s -check-prefix=X64 3; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s -check-prefix=WIN64 4 5; Check that the argument gets zero-extended before calling. 6; X86-LABEL: bar1 7; X86: movzbl 8; X86: calll 9; X64-LABEL: bar1 10; X64: movzbl 11; X64: jmp 12; WIN64-LABEL: bar1 13; WIN64: movzbl 14; WIN64: callq 15define void @bar1(i1 zeroext %v1) nounwind ssp { 16entry: 17 %conv = zext i1 %v1 to i32 18 %call = tail call i32 (...) @foo1(i32 %conv) nounwind 19 ret void 20} 21 22; Check that on x86-64 the arguments are simply forwarded. 23; X64-LABEL: bar2 24; X64-NOT: movzbl 25; X64: jmp 26; WIN64-LABEL: bar2 27; WIN64-NOT: movzbl 28; WIN64: callq 29define void @bar2(i8 zeroext %v1) nounwind ssp { 30entry: 31 %conv = zext i8 %v1 to i32 32 %call = tail call i32 (...) @foo1(i32 %conv) nounwind 33 ret void 34} 35 36; Check that i1 return values are not zero-extended. 37; X86-LABEL: bar3 38; X86: call 39; X86-NEXT: {{add|pop}} 40; X86-NEXT: ret 41; X64-LABEL: bar3 42; X64: call 43; X64-NEXT: {{add|pop}} 44; X64-NEXT: ret 45; WIN64-LABEL: bar3 46; WIN64: call 47; WIN64-NEXT: {{add|pop}} 48; WIN64-NEXT: ret 49define zeroext i1 @bar3() nounwind ssp { 50entry: 51 %call = call i1 @foo2() nounwind 52 ret i1 %call 53} 54 55declare i32 @foo1(...) 56declare zeroext i1 @foo2() 57