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llvm-6502/test/CodeGen/X86/muloti.ll
Eric Christopher a3071455e5 Fix UMULO support for 2x register width to allow the full
range without a libcall to a new mulo<mode> libcall
that we'd have to create.

Finishes the rest of rdar://9090077 and rdar://9210061


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133318 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18 00:09:57 +00:00

82 lines
2.6 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
%0 = type { i64, i64 }
%1 = type { i128, i1 }
define %0 @x(i64 %a.coerce0, i64 %a.coerce1, i64 %b.coerce0, i64 %b.coerce1) nounwind uwtable ssp {
; CHECK: x
entry:
%tmp16 = zext i64 %a.coerce0 to i128
%tmp11 = zext i64 %a.coerce1 to i128
%tmp12 = shl nuw i128 %tmp11, 64
%ins14 = or i128 %tmp12, %tmp16
%tmp6 = zext i64 %b.coerce0 to i128
%tmp3 = zext i64 %b.coerce1 to i128
%tmp4 = shl nuw i128 %tmp3, 64
%ins = or i128 %tmp4, %tmp6
%0 = tail call %1 @llvm.smul.with.overflow.i128(i128 %ins14, i128 %ins)
; CHECK: callq ___muloti4
%1 = extractvalue %1 %0, 0
%2 = extractvalue %1 %0, 1
br i1 %2, label %overflow, label %nooverflow
overflow: ; preds = %entry
tail call void @llvm.trap()
unreachable
nooverflow: ; preds = %entry
%tmp20 = trunc i128 %1 to i64
%tmp21 = insertvalue %0 undef, i64 %tmp20, 0
%tmp22 = lshr i128 %1, 64
%tmp23 = trunc i128 %tmp22 to i64
%tmp24 = insertvalue %0 %tmp21, i64 %tmp23, 1
ret %0 %tmp24
}
define %0 @foo(i64 %a.coerce0, i64 %a.coerce1, i64 %b.coerce0, i64 %b.coerce1) nounwind uwtable ssp {
entry:
; CHECK: foo
%retval = alloca i128, align 16
%coerce = alloca i128, align 16
%a.addr = alloca i128, align 16
%coerce1 = alloca i128, align 16
%b.addr = alloca i128, align 16
%0 = bitcast i128* %coerce to %0*
%1 = getelementptr %0* %0, i32 0, i32 0
store i64 %a.coerce0, i64* %1
%2 = getelementptr %0* %0, i32 0, i32 1
store i64 %a.coerce1, i64* %2
%a = load i128* %coerce, align 16
store i128 %a, i128* %a.addr, align 16
%3 = bitcast i128* %coerce1 to %0*
%4 = getelementptr %0* %3, i32 0, i32 0
store i64 %b.coerce0, i64* %4
%5 = getelementptr %0* %3, i32 0, i32 1
store i64 %b.coerce1, i64* %5
%b = load i128* %coerce1, align 16
store i128 %b, i128* %b.addr, align 16
%tmp = load i128* %a.addr, align 16
%tmp2 = load i128* %b.addr, align 16
%6 = call %1 @llvm.umul.with.overflow.i128(i128 %tmp, i128 %tmp2)
; CHECK: cmov
; CHECK: divti3
%7 = extractvalue %1 %6, 0
%8 = extractvalue %1 %6, 1
br i1 %8, label %overflow, label %nooverflow
overflow: ; preds = %entry
call void @llvm.trap()
unreachable
nooverflow: ; preds = %entry
store i128 %7, i128* %retval
%9 = bitcast i128* %retval to %0*
%10 = load %0* %9, align 1
ret %0 %10
}
declare %1 @llvm.umul.with.overflow.i128(i128, i128) nounwind readnone
declare %1 @llvm.smul.with.overflow.i128(i128, i128) nounwind readnone
declare void @llvm.trap() nounwind