llvm-6502/test/CodeGen/PowerPC/i32-to-float.ll
Hal Finkel 4647919784 Add more PPC floating-point conversion instructions
The P7 and A2 have additional floating-point conversion instructions which
allow a direct two-instruction sequence (plus load/store) to convert from all
combinations (signed/unsigned i32/i64) <--> (float/double) (on previous cores,
only some combinations were directly available).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178480 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-01 17:52:07 +00:00

83 lines
1.9 KiB
LLVM

; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=g5 | FileCheck %s
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr6 | FileCheck -check-prefix=CHECK-PWR6 %s
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=a2 | FileCheck -check-prefix=CHECK-A2 %s
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-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
define float @foo(i32 %a) nounwind {
entry:
%x = sitofp i32 %a to float
ret float %x
; CHECK: @foo
; CHECK: extsw [[REG:[0-9]+]], 3
; CHECK: std [[REG]],
; CHECK: lfd [[REG2:[0-9]+]],
; CHECK: fcfid [[REG3:[0-9]+]], [[REG2]]
; CHECK: frsp 1, [[REG3]]
; CHECK: blr
; CHECK-PWR6: @foo
; CHECK-PWR6: stw 3,
; CHECK-PWR6: lfiwax [[REG:[0-9]+]],
; CHECK-PWR6: fcfid [[REG2:[0-9]+]], [[REG]]
; CHECK-PWR6: frsp 1, [[REG2]]
; CHECK-PWR6: blr
; CHECK-A2: @foo
; CHECK-A2: stw 3,
; CHECK-A2: lfiwax [[REG:[0-9]+]],
; CHECK-A2: fcfids 1, [[REG]]
; CHECK-A2: blr
}
define double @goo(i32 %a) nounwind {
entry:
%x = sitofp i32 %a to double
ret double %x
; CHECK: @goo
; CHECK: extsw [[REG:[0-9]+]], 3
; CHECK: std [[REG]],
; CHECK: lfd [[REG2:[0-9]+]],
; CHECK: fcfid 1, [[REG2]]
; CHECK: blr
; CHECK-PWR6: @goo
; CHECK-PWR6: stw 3,
; CHECK-PWR6: lfiwax [[REG:[0-9]+]],
; CHECK-PWR6: fcfid 1, [[REG]]
; CHECK-PWR6: blr
; CHECK-A2: @goo
; CHECK-A2: stw 3,
; CHECK-A2: lfiwax [[REG:[0-9]+]],
; CHECK-A2: fcfid 1, [[REG]]
; CHECK-A2: blr
}
define float @foou(i32 %a) nounwind {
entry:
%x = uitofp i32 %a to float
ret float %x
; CHECK-A2: @foou
; CHECK-A2: stw 3,
; CHECK-A2: lfiwzx [[REG:[0-9]+]],
; CHECK-A2: fcfidus 1, [[REG]]
; CHECK-A2: blr
}
define double @goou(i32 %a) nounwind {
entry:
%x = uitofp i32 %a to double
ret double %x
; CHECK-A2: @goou
; CHECK-A2: stw 3,
; CHECK-A2: lfiwzx [[REG:[0-9]+]],
; CHECK-A2: fcfidu 1, [[REG]]
; CHECK-A2: blr
}