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llvm-6502/test/CodeGen/X86/uint64-to-float.ll

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Use –mcpu=generic, so that the test will not fail when run on an Intel Atom processor, due to the Atom scheduler producing an instruction sequence that is different from that which is expected. Patch by Michael Spencer! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150736 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16 22:42:48 +00:00
; RUN: llc < %s -mcpu=generic -march=x86-64 | FileCheck %s
Use a more efficient lowering of uint64_t --> float that can take advantage of hardware signed integer conversion without having to do a double cast (uint64_t --> double --> float). This is based on the algorithm from compiler_rt's __floatundisf for X86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115634 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05 17:24:05 +00:00
; Verify that we are using the efficient uitofp --> sitofp lowering illustrated
; by the compiler_rt implementation of __floatundisf.
; <rdar://problem/8493982>
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0.0"
Update live-in lists when splitting critical edges. Fixes PR10814. Patch by Jan Sjödin! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141960 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-14 17:25:46 +00:00
; CHECK: testq %rdi, %rdi
; CHECK-NEXT: jns LBB0_2
Set EFLAGS correctly in EmitLoweredSelect on X86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149597 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-02 07:48:37 +00:00
; CHECK: shrq
; CHECK-NEXT: andq
; CHECK-NEXT: orq
; CHECK-NEXT: cvtsi2ss
Use a more efficient lowering of uint64_t --> float that can take advantage of hardware signed integer conversion without having to do a double cast (uint64_t --> double --> float). This is based on the algorithm from compiler_rt's __floatundisf for X86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115634 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05 17:24:05 +00:00
; CHECK: LBB0_2
Revert r144611 and r144613. These tests are actually correct, clang was miscompiling ExeDepsFix::processUses. Evan fixed the miscompilation in r144628. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144630 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15 07:13:03 +00:00
; CHECK-NEXT: cvtsi2ss
Use a more efficient lowering of uint64_t --> float that can take advantage of hardware signed integer conversion without having to do a double cast (uint64_t --> double --> float). This is based on the algorithm from compiler_rt's __floatundisf for X86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115634 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05 17:24:05 +00:00
define float @test(i64 %a) {
entry:
%b = uitofp i64 %a to float
ret float %b
}
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