ppc64-align-long-double.ll
2.3 KB
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -mcpu=pwr7 -O2 -fast-isel=false -mattr=-vsx < %s | FileCheck %s
; RUN: llc -verify-machineinstrs -mcpu=pwr7 -O2 -fast-isel=false -mattr=+vsx < %s | FileCheck -check-prefix=CHECK-VSX %s
; RUN: llc -verify-machineinstrs -mcpu=pwr9 -O2 -fast-isel=false -mattr=+vsx < %s | FileCheck -check-prefix=CHECK-P9 %s
; Verify internal alignment of long double in a struct. The double
; argument comes in GPR3; GPR4 is skipped; GPRs 5 and 6 contain
; the long double. Check that these are stored to proper locations
; in the parameter save area and loaded from there for return in FPR1/2.
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"
%struct.S = type { double, ppc_fp128 }
; The additional stores are caused because we forward the value in the
; store->load->bitcast path to make a store and bitcast of the same
; value. Since the target does bitcast through memory and we no longer
; remember the address we need to do the store in a fresh local
; address.
define ppc_fp128 @test(%struct.S* byval %x) nounwind {
; CHECK-LABEL: test:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: std 5, -16(1)
; CHECK-NEXT: std 6, -8(1)
; CHECK-NEXT: lfd 1, -16(1)
; CHECK-NEXT: lfd 2, -8(1)
; CHECK-NEXT: std 6, 72(1)
; CHECK-NEXT: std 5, 64(1)
; CHECK-NEXT: std 3, 48(1)
; CHECK-NEXT: std 4, 56(1)
; CHECK-NEXT: blr
;
; CHECK-VSX-LABEL: test:
; CHECK-VSX: # %bb.0: # %entry
; CHECK-VSX-NEXT: std 3, 48(1)
; CHECK-VSX-NEXT: std 6, 72(1)
; CHECK-VSX-NEXT: std 5, 64(1)
; CHECK-VSX-NEXT: std 4, 56(1)
; CHECK-VSX-NEXT: std 5, -16(1)
; CHECK-VSX-NEXT: std 6, -8(1)
; CHECK-VSX-NEXT: lfd 1, -16(1)
; CHECK-VSX-NEXT: lfd 2, -8(1)
; CHECK-VSX-NEXT: blr
;
; CHECK-P9-LABEL: test:
; CHECK-P9: # %bb.0: # %entry
; CHECK-P9-NEXT: mtfprd 1, 5
; CHECK-P9-NEXT: mtfprd 2, 6
; CHECK-P9-NEXT: std 6, 72(1)
; CHECK-P9-NEXT: std 5, 64(1)
; CHECK-P9-NEXT: std 3, 48(1)
; CHECK-P9-NEXT: std 4, 56(1)
; CHECK-P9-NEXT: blr
entry:
%b = getelementptr inbounds %struct.S, %struct.S* %x, i32 0, i32 1
%0 = load ppc_fp128, ppc_fp128* %b, align 16
ret ppc_fp128 %0
}