llvm-project/llvm/test/Transforms/InstCombine/bitcast-bigendian.ll

; RUN: opt < %s -instcombine -S | FileCheck %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"

; These tests are extracted from bitcast.ll.
; Verify that they also work correctly on big-endian targets.

define float @test2(<2 x float> %A, <2 x i32> %B) {
  %tmp28 = bitcast <2 x float> %A to i64  ; <i64> [#uses=2]
  %tmp23 = trunc i64 %tmp28 to i32                ; <i32> [#uses=1]
  %tmp24 = bitcast i32 %tmp23 to float            ; <float> [#uses=1]

  %tmp = bitcast <2 x i32> %B to i64
  %tmp2 = trunc i64 %tmp to i32                ; <i32> [#uses=1]
  %tmp4 = bitcast i32 %tmp2 to float            ; <float> [#uses=1]

  %add = fadd float %tmp24, %tmp4
  ret float %add

; CHECK-LABEL: @test2(
; CHECK-NEXT:  %tmp24 = extractelement <2 x float> %A, i32 1
; CHECK-NEXT:  bitcast <2 x i32> %B to <2 x float>
; CHECK-NEXT:  %tmp4 = extractelement <2 x float> {{.*}}, i32 1
; CHECK-NEXT:  %add = fadd float %tmp24, %tmp4
; CHECK-NEXT:  ret float %add
}

define float @test3(<2 x float> %A, <2 x i64> %B) {
  %tmp28 = bitcast <2 x float> %A to i64
  %tmp29 = lshr i64 %tmp28, 32
  %tmp23 = trunc i64 %tmp29 to i32
  %tmp24 = bitcast i32 %tmp23 to float

  %tmp = bitcast <2 x i64> %B to i128
  %tmp1 = lshr i128 %tmp, 64
  %tmp2 = trunc i128 %tmp1 to i32
  %tmp4 = bitcast i32 %tmp2 to float

  %add = fadd float %tmp24, %tmp4
  ret float %add

; CHECK-LABEL: @test3(
; CHECK-NEXT:  %tmp24 = extractelement <2 x float> %A, i32 0
; CHECK-NEXT:  bitcast <2 x i64> %B to <4 x float>
; CHECK-NEXT:  %tmp4 = extractelement <4 x float> {{.*}}, i32 1
; CHECK-NEXT:  %add = fadd float %tmp24, %tmp4
; CHECK-NEXT:  ret float %add
}

define <2 x i32> @test4(i32 %A, i32 %B){
  %tmp38 = zext i32 %A to i64
  %tmp32 = zext i32 %B to i64
  %tmp33 = shl i64 %tmp32, 32
  %ins35 = or i64 %tmp33, %tmp38
  %tmp43 = bitcast i64 %ins35 to <2 x i32>
  ret <2 x i32> %tmp43
  ; CHECK-LABEL: @test4(
  ; CHECK-NEXT: insertelement <2 x i32> undef, i32 %B, i32 0
  ; CHECK-NEXT: insertelement <2 x i32> {{.*}}, i32 %A, i32 1
  ; CHECK-NEXT: ret <2 x i32>

}

define <2 x float> @test5(float %A, float %B) {
  %tmp37 = bitcast float %A to i32
  %tmp38 = zext i32 %tmp37 to i64
  %tmp31 = bitcast float %B to i32
  %tmp32 = zext i32 %tmp31 to i64
  %tmp33 = shl i64 %tmp32, 32
  %ins35 = or i64 %tmp33, %tmp38
  %tmp43 = bitcast i64 %ins35 to <2 x float>
  ret <2 x float> %tmp43
  ; CHECK-LABEL: @test5(
  ; CHECK-NEXT: insertelement <2 x float> undef, float %B, i32 0
  ; CHECK-NEXT: insertelement <2 x float> {{.*}}, float %A, i32 1
  ; CHECK-NEXT: ret <2 x float>
}

define <2 x float> @test6(float %A){
  %tmp23 = bitcast float %A to i32              ; <i32> [#uses=1]
  %tmp24 = zext i32 %tmp23 to i64                 ; <i64> [#uses=1]
  %tmp25 = shl i64 %tmp24, 32                     ; <i64> [#uses=1]
  %mask20 = or i64 %tmp25, 1109917696             ; <i64> [#uses=1]
  %tmp35 = bitcast i64 %mask20 to <2 x float>     ; <<2 x float>> [#uses=1]
  ret <2 x float> %tmp35
; CHECK-LABEL: @test6(
; CHECK-NEXT: insertelement <2 x float> undef, float %A, i32 0
; CHECK-NEXT: insertelement <2 x float> {{.*}}, float 4.200000e+01, i32 1
; CHECK: ret
}

; Verify that 'xor' of vector and constant is done as a vector bitwise op before the bitcast.

define <2 x i32> @xor_bitcast_vec_to_vec(<1 x i64> %a) {
  %t1 = bitcast <1 x i64> %a to <2 x i32>
  %t2 = xor <2 x i32> <i32 1, i32 2>, %t1
  ret <2 x i32> %t2

; CHECK-LABEL: @xor_bitcast_vec_to_vec(
; CHECK-NEXT:  %t21 = xor <1 x i64> %a, <i64 4294967298> 
; CHECK-NEXT:  %t2 = bitcast <1 x i64> %t21 to <2 x i32>
; CHECK-NEXT:  ret <2 x i32> %t2
}

; Verify that 'and' of integer and constant is done as a vector bitwise op before the bitcast.

define i64 @and_bitcast_vec_to_int(<2 x i32> %a) {
  %t1 = bitcast <2 x i32> %a to i64
  %t2 = and i64 %t1, 3
  ret i64 %t2

; CHECK-LABEL: @and_bitcast_vec_to_int(
; CHECK-NEXT:  %t21 = and <2 x i32> %a, <i32 0, i32 3>
; CHECK-NEXT:  %t2 = bitcast <2 x i32> %t21 to i64
; CHECK-NEXT:  ret i64 %t2
}

; Verify that 'or' of vector and constant is done as an integer bitwise op before the bitcast.

define <2 x i32> @or_bitcast_int_to_vec(i64 %a) {
  %t1 = bitcast i64 %a to <2 x i32>
  %t2 = or <2 x i32> %t1, <i32 1, i32 2>
  ret <2 x i32> %t2

; CHECK-LABEL: @or_bitcast_int_to_vec(
; CHECK-NEXT:  %t21 = or i64 %a, 4294967298
; CHECK-NEXT:  %t2 = bitcast i64 %t21 to <2 x i32>
; CHECK-NEXT:  ret <2 x i32> %t2
}