44 lines · plain
1; RUN: llc -O0 -mtriple=x86_64-unknown-unknown < %s | FileCheck %s2 3; Checks that fake uses of the FP stack do not cause a crash.4;5; /*******************************************************************/6; extern long double foo(long double, long double, long double);7;8; long double actual(long double p1, long double p2, long double p3) {9; return fmal(p1, p2, p3);10; }11; /*******************************************************************/12 13define x86_fp80 @actual(x86_fp80 %p1, x86_fp80 %p2, x86_fp80 %p3) optdebug {14;15; CHECK: actual16;17entry:18 %p1.addr = alloca x86_fp80, align 1619 %p2.addr = alloca x86_fp80, align 1620 %p3.addr = alloca x86_fp80, align 1621 store x86_fp80 %p1, ptr %p1.addr, align 1622 store x86_fp80 %p2, ptr %p2.addr, align 1623 store x86_fp80 %p3, ptr %p3.addr, align 1624 %0 = load x86_fp80, ptr %p1.addr, align 1625 %1 = load x86_fp80, ptr %p2.addr, align 1626 %2 = load x86_fp80, ptr %p3.addr, align 1627;28; CHECK: callq{{.*}}foo29;30 %3 = call x86_fp80 @foo(x86_fp80 %0, x86_fp80 %1, x86_fp80 %2)31 %4 = load x86_fp80, ptr %p1.addr, align 1632 call void (...) @llvm.fake.use(x86_fp80 %4)33 %5 = load x86_fp80, ptr %p2.addr, align 1634 call void (...) @llvm.fake.use(x86_fp80 %5)35 %6 = load x86_fp80, ptr %p3.addr, align 1636 call void (...) @llvm.fake.use(x86_fp80 %6)37;38; CHECK: ret39;40 ret x86_fp80 %341}42 43declare x86_fp80 @foo(x86_fp80, x86_fp80, x86_fp80)44