; Test moves between FPRs and GPRs. The 32-bit cases test the z10
; implementation, which has no high-word support.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
declare i64 @foo()
declare double @bar()
@dptr = external global double
@iptr = external global i64
; Test 32-bit moves from GPRs to FPRs. The GPR must be moved into the high
; 32 bits of the FPR.
define float @f1(i32 %a) {
; CHECK-LABEL: f1:
; CHECK: sllg [[REGISTER:%r[0-5]]], %r2, 32
; CHECK: ldgr %f0, [[REGISTER]]
%res = bitcast i32 %a to float
ret float %res
}
; Like f1, but create a situation where the shift can be folded with
; surrounding code.
define float @f2(i64 %big) {
; CHECK-LABEL: f2:
; CHECK: risbg [[REGISTER:%r[0-5]]], %r2, 0, 159, 31
; CHECK: ldgr %f0, [[REGISTER]]
%shift = lshr i64 %big, 1
%a = trunc i64 %shift to i32
%res = bitcast i32 %a to float
ret float %res
}
; Another example of the same thing.
define float @f3(i64 %big) {
; CHECK-LABEL: f3:
; CHECK: risbg [[REGISTER:%r[0-5]]], %r2, 0, 159, 2
; CHECK: ldgr %f0, [[REGISTER]]
%shift = ashr i64 %big, 30
%a = trunc i64 %shift to i32
%res = bitcast i32 %a to float
ret float %res
}
; Like f1, but the value to transfer is already in the high 32 bits.
define float @f4(i64 %big) {
; CHECK-LABEL: f4:
; CHECK-NOT: %r2
; CHECK: nilf %r2, 0
; CHECK-NOT: %r2
; CHECK: ldgr %f0, %r2
%shift = ashr i64 %big, 32
%a = trunc i64 %shift to i32
%res = bitcast i32 %a to float
ret float %res
}
; Test 64-bit moves from GPRs to FPRs.
define double @f5(i64 %a) {
; CHECK-LABEL: f5:
; CHECK: ldgr %f0, %r2
%res = bitcast i64 %a to double
ret double %res
}
; Test 128-bit moves from GPRs to FPRs. i128 isn't a legitimate type,
; so this goes through memory.
define void @f6(fp128 *%a, i128 *%b) {
; CHECK-LABEL: f6:
; CHECK: lg
; CHECK: lg
; CHECK: stg
; CHECK: stg
; CHECK: br %r14
%val = load i128, i128 *%b
%res = bitcast i128 %val to fp128
store fp128 %res, fp128 *%a
ret void
}
; Test 32-bit moves from FPRs to GPRs. The high 32 bits of the FPR should
; be moved into the low 32 bits of the GPR.
define i32 @f7(float %a) {
; CHECK-LABEL: f7:
; CHECK: lgdr [[REGISTER:%r[0-5]]], %f0
; CHECK: srlg %r2, [[REGISTER]], 32
%res = bitcast float %a to i32
ret i32 %res
}
; Test 64-bit moves from FPRs to GPRs.
define i64 @f8(double %a) {
; CHECK-LABEL: f8:
; CHECK: lgdr %r2, %f0
%res = bitcast double %a to i64
ret i64 %res
}
; Test 128-bit moves from FPRs to GPRs, with the same restriction as f6.
define void @f9(fp128 *%a, i128 *%b) {
; CHECK-LABEL: f9:
; CHECK: ld
; CHECK: ld
; CHECK: std
; CHECK: std
%val = load fp128, fp128 *%a
%res = bitcast fp128 %val to i128
store i128 %res, i128 *%b
ret void
}
; Test cases where the destination of an LGDR needs to be spilled.
; We shouldn't have any integer stack stores or floating-point loads.
define void @f10(double %extra) {
; CHECK-LABEL: f10:
; CHECK: dptr
; CHECK-NOT: stg {{.*}}(%r15)
; CHECK: %loop
; CHECK-NOT: ld {{.*}}(%r15)
; CHECK: %exit
; CHECK: br %r14
entry:
%double0 = load volatile double, double *@dptr
%biased0 = fadd double %double0, %extra
%int0 = bitcast double %biased0 to i64
%double1 = load volatile double, double *@dptr
%biased1 = fadd double %double1, %extra
%int1 = bitcast double %biased1 to i64
%double2 = load volatile double, double *@dptr
%biased2 = fadd double %double2, %extra
%int2 = bitcast double %biased2 to i64
%double3 = load volatile double, double *@dptr
%biased3 = fadd double %double3, %extra
%int3 = bitcast double %biased3 to i64
%double4 = load volatile double, double *@dptr
%biased4 = fadd double %double4, %extra
%int4 = bitcast double %biased4 to i64
%double5 = load volatile double, double *@dptr
%biased5 = fadd double %double5, %extra
%int5 = bitcast double %biased5 to i64
%double6 = load volatile double, double *@dptr
%biased6 = fadd double %double6, %extra
%int6 = bitcast double %biased6 to i64
%double7 = load volatile double, double *@dptr
%biased7 = fadd double %double7, %extra
%int7 = bitcast double %biased7 to i64
%double8 = load volatile double, double *@dptr
%biased8 = fadd double %double8, %extra
%int8 = bitcast double %biased8 to i64
%double9 = load volatile double, double *@dptr
%biased9 = fadd double %double9, %extra
%int9 = bitcast double %biased9 to i64
br label %loop
loop:
%start = call i64 @foo()
%or0 = or i64 %start, %int0
%or1 = or i64 %or0, %int1
%or2 = or i64 %or1, %int2
%or3 = or i64 %or2, %int3
%or4 = or i64 %or3, %int4
%or5 = or i64 %or4, %int5
%or6 = or i64 %or5, %int6
%or7 = or i64 %or6, %int7
%or8 = or i64 %or7, %int8
%or9 = or i64 %or8, %int9
store i64 %or9, i64 *@iptr
%cont = icmp ne i64 %start, 1
br i1 %cont, label %loop, label %exit
exit:
ret void
}
; ...likewise LDGR, with the requirements the other way around.
define void @f11(i64 %mask) {
; CHECK-LABEL: f11:
; CHECK: iptr
; CHECK-NOT: std {{.*}}(%r15)
; CHECK: %loop
; CHECK-NOT: lg {{.*}}(%r15)
; CHECK: %exit
; CHECK: br %r14
entry:
%int0 = load volatile i64, i64 *@iptr
%masked0 = and i64 %int0, %mask
%double0 = bitcast i64 %masked0 to double
%int1 = load volatile i64, i64 *@iptr
%masked1 = and i64 %int1, %mask
%double1 = bitcast i64 %masked1 to double
%int2 = load volatile i64, i64 *@iptr
%masked2 = and i64 %int2, %mask
%double2 = bitcast i64 %masked2 to double
%int3 = load volatile i64, i64 *@iptr
%masked3 = and i64 %int3, %mask
%double3 = bitcast i64 %masked3 to double
%int4 = load volatile i64, i64 *@iptr
%masked4 = and i64 %int4, %mask
%double4 = bitcast i64 %masked4 to double
%int5 = load volatile i64, i64 *@iptr
%masked5 = and i64 %int5, %mask
%double5 = bitcast i64 %masked5 to double
%int6 = load volatile i64, i64 *@iptr
%masked6 = and i64 %int6, %mask
%double6 = bitcast i64 %masked6 to double
%int7 = load volatile i64, i64 *@iptr
%masked7 = and i64 %int7, %mask
%double7 = bitcast i64 %masked7 to double
%int8 = load volatile i64, i64 *@iptr
%masked8 = and i64 %int8, %mask
%double8 = bitcast i64 %masked8 to double
%int9 = load volatile i64, i64 *@iptr
%masked9 = and i64 %int9, %mask
%double9 = bitcast i64 %masked9 to double
br label %loop
loop:
%start = call double @bar()
%add0 = fadd double %start, %double0
%add1 = fadd double %add0, %double1
%add2 = fadd double %add1, %double2
%add3 = fadd double %add2, %double3
%add4 = fadd double %add3, %double4
%add5 = fadd double %add4, %double5
%add6 = fadd double %add5, %double6
%add7 = fadd double %add6, %double7
%add8 = fadd double %add7, %double8
%add9 = fadd double %add8, %double9
store double %add9, double *@dptr
%cont = fcmp one double %start, 1.0
br i1 %cont, label %loop, label %exit
exit:
ret void
}
; Test cases where the source of an LDGR needs to be spilled.
; We shouldn't have any integer stack stores or floating-point loads.
define void @f12() {
; CHECK-LABEL: f12:
; CHECK: %loop
; CHECK-NOT: std {{.*}}(%r15)
; CHECK: %exit
; CHECK: foo@PLT
; CHECK-NOT: lg {{.*}}(%r15)
; CHECK: foo@PLT
; CHECK: br %r14
entry:
br label %loop
loop:
%int0 = phi i64 [ 0, %entry ], [ %add0, %loop ]
%int1 = phi i64 [ 0, %entry ], [ %add1, %loop ]
%int2 = phi i64 [ 0, %entry ], [ %add2, %loop ]
%int3 = phi i64 [ 0, %entry ], [ %add3, %loop ]
%int4 = phi i64 [ 0, %entry ], [ %add4, %loop ]
%int5 = phi i64 [ 0, %entry ], [ %add5, %loop ]
%int6 = phi i64 [ 0, %entry ], [ %add6, %loop ]
%int7 = phi i64 [ 0, %entry ], [ %add7, %loop ]
%int8 = phi i64 [ 0, %entry ], [ %add8, %loop ]
%int9 = phi i64 [ 0, %entry ], [ %add9, %loop ]
%bias = call i64 @foo()
%add0 = add i64 %int0, %bias
%add1 = add i64 %int1, %bias
%add2 = add i64 %int2, %bias
%add3 = add i64 %int3, %bias
%add4 = add i64 %int4, %bias
%add5 = add i64 %int5, %bias
%add6 = add i64 %int6, %bias
%add7 = add i64 %int7, %bias
%add8 = add i64 %int8, %bias
%add9 = add i64 %int9, %bias
%cont = icmp ne i64 %bias, 1
br i1 %cont, label %loop, label %exit
exit:
%unused1 = call i64 @foo()
%factor = load volatile double, double *@dptr
%conv0 = bitcast i64 %add0 to double
%mul0 = fmul double %conv0, %factor
store volatile double %mul0, double *@dptr
%conv1 = bitcast i64 %add1 to double
%mul1 = fmul double %conv1, %factor
store volatile double %mul1, double *@dptr
%conv2 = bitcast i64 %add2 to double
%mul2 = fmul double %conv2, %factor
store volatile double %mul2, double *@dptr
%conv3 = bitcast i64 %add3 to double
%mul3 = fmul double %conv3, %factor
store volatile double %mul3, double *@dptr
%conv4 = bitcast i64 %add4 to double
%mul4 = fmul double %conv4, %factor
store volatile double %mul4, double *@dptr
%conv5 = bitcast i64 %add5 to double
%mul5 = fmul double %conv5, %factor
store volatile double %mul5, double *@dptr
%conv6 = bitcast i64 %add6 to double
%mul6 = fmul double %conv6, %factor
store volatile double %mul6, double *@dptr
%conv7 = bitcast i64 %add7 to double
%mul7 = fmul double %conv7, %factor
store volatile double %mul7, double *@dptr
%conv8 = bitcast i64 %add8 to double
%mul8 = fmul double %conv8, %factor
store volatile double %mul8, double *@dptr
%conv9 = bitcast i64 %add9 to double
%mul9 = fmul double %conv9, %factor
store volatile double %mul9, double *@dptr
%unused2 = call i64 @foo()
ret void
}
; ...likewise LGDR, with the requirements the other way around.
define void @f13() {
; CHECK-LABEL: f13:
; CHECK: %loop
; CHECK-NOT: stg {{.*}}(%r15)
; CHECK: %exit
; CHECK: foo@PLT
; CHECK-NOT: ld {{.*}}(%r15)
; CHECK: foo@PLT
; CHECK: br %r14
entry:
br label %loop
loop:
%double0 = phi double [ 1.0, %entry ], [ %mul0, %loop ]
%double1 = phi double [ 1.0, %entry ], [ %mul1, %loop ]
%double2 = phi double [ 1.0, %entry ], [ %mul2, %loop ]
%double3 = phi double [ 1.0, %entry ], [ %mul3, %loop ]
%double4 = phi double [ 1.0, %entry ], [ %mul4, %loop ]
%double5 = phi double [ 1.0, %entry ], [ %mul5, %loop ]
%double6 = phi double [ 1.0, %entry ], [ %mul6, %loop ]
%double7 = phi double [ 1.0, %entry ], [ %mul7, %loop ]
%double8 = phi double [ 1.0, %entry ], [ %mul8, %loop ]
%double9 = phi double [ 1.0, %entry ], [ %mul9, %loop ]
%factor = call double @bar()
%mul0 = fmul double %double0, %factor
%mul1 = fmul double %double1, %factor
%mul2 = fmul double %double2, %factor
%mul3 = fmul double %double3, %factor
%mul4 = fmul double %double4, %factor
%mul5 = fmul double %double5, %factor
%mul6 = fmul double %double6, %factor
%mul7 = fmul double %double7, %factor
%mul8 = fmul double %double8, %factor
%mul9 = fmul double %double9, %factor
%cont = fcmp one double %factor, 1.0
br i1 %cont, label %loop, label %exit
exit:
%unused1 = call i64 @foo()
%bias = load volatile i64, i64 *@iptr
%conv0 = bitcast double %mul0 to i64
%add0 = add i64 %conv0, %bias
store volatile i64 %add0, i64 *@iptr
%conv1 = bitcast double %mul1 to i64
%add1 = add i64 %conv1, %bias
store volatile i64 %add1, i64 *@iptr
%conv2 = bitcast double %mul2 to i64
%add2 = add i64 %conv2, %bias
store volatile i64 %add2, i64 *@iptr
%conv3 = bitcast double %mul3 to i64
%add3 = add i64 %conv3, %bias
store volatile i64 %add3, i64 *@iptr
%conv4 = bitcast double %mul4 to i64
%add4 = add i64 %conv4, %bias
store volatile i64 %add4, i64 *@iptr
%conv5 = bitcast double %mul5 to i64
%add5 = add i64 %conv5, %bias
store volatile i64 %add5, i64 *@iptr
%conv6 = bitcast double %mul6 to i64
%add6 = add i64 %conv6, %bias
store volatile i64 %add6, i64 *@iptr
%conv7 = bitcast double %mul7 to i64
%add7 = add i64 %conv7, %bias
store volatile i64 %add7, i64 *@iptr
%conv8 = bitcast double %mul8 to i64
%add8 = add i64 %conv8, %bias
store volatile i64 %add8, i64 *@iptr
%conv9 = bitcast double %mul9 to i64
%add9 = add i64 %conv9, %bias
store volatile i64 %add9, i64 *@iptr
%unused2 = call i64 @foo()
ret void
}